21628080

素因数分解:

$2^4\times 3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1$

素因数の和:89

約数の個数: 320

約数和(自身を含む): 85708800

約数和(自身を除く): 64080720

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 17, 18, 19, 20, 24, 27, 30, 31, 34, 36, 38, 40, 45, 48, 51, 54, 57, 60, 62, 68, 72, 76, 80, 85, 90, 93, 95, 102, 108, 114, 120, 124, 135, 136, 144, 152, 153, 155, 170, 171, 180, 186, 190, 204, 216, 228, 240, 248, 255, 270, 272, 279, 285, 304, 306, 310, 323, 340, 342, 360, 372, 380, 408, 432, 456, 459, 465, 496, 510, 513, 527, 540, 558, 570, 589, 612, 620, 646, 680, 684, 720, 744, 760, 765, 816, 837, 855, 912, 918, 930, 969, 1020, 1026, 1054, 1080, 1116, 1140, 1178, 1224, 1240, 1292, 1360, 1368, 1395, 1488, 1520, 1530, 1581, 1615, 1674, 1710, 1767, 1836, 1860, 1938, 2040, 2052, 2108, 2160, 2232, 2280, 2295, 2356, 2448, 2480, 2565, 2584, 2635, 2736, 2790, 2907, 2945, 3060, 3162, 3230, 3348, 3420, 3534, 3672, 3720, 3876, 4080, 4104, 4185, 4216, 4464, 4560, 4590, 4712, 4743, 4845, 5130, 5168, 5270, 5301, 5580, 5814, 5890, 6120, 6324, 6460, 6696, 6840, 7068, 7344, 7440, 7752, 7905, 8208, 8370, 8432, 8721, 8835, 9180, 9424, 9486, 9690, 10013, 10260, 10540, 10602, 11160, 11628, 11780, 12240, 12648, 12920, 13392, 13680, 14136, 14229, 14535, 15504, 15810, 15903, 16740, 17442, 17670, 18360, 18972, 19380, 20026, 20520, 21080, 21204, 22320, 23256, 23560, 23715, 25296, 25840, 26505, 28272, 28458, 29070, 30039, 31620, 31806, 33480, 34884, 35340, 36720, 37944, 38760, 40052, 41040, 42160, 42408, 43605, 46512, 47120, 47430, 50065, 53010, 56916, 58140, 60078, 63240, 63612, 66960, 69768, 70680, 71145, 75888, 77520, 79515, 80104, 84816, 87210, 90117, 94860, 100130, 106020, 113832, 116280, 120156, 126480, 127224, 139536, 141360, 142290, 150195, 159030, 160208, 174420, 180234, 189720, 200260, 212040, 227664, 232560, 240312, 254448, 270351, 284580, 300390, 318060, 348840, 360468, 379440, 400520, 424080, 450585, 480624, 540702, 569160, 600780, 636120, 697680, 720936, 801040, 901170, 1081404, 1138320, 1201560, 1272240, 1351755, 1441872, 1802340, 2162808, 2403120, 2703510, 3604680, 4325616, 5407020, 7209360, 10814040, 21628080]

約数ペア:

[(1, 21628080), (2, 10814040), (3, 7209360), (4, 5407020), (5, 4325616), (6, 3604680), (8, 2703510), (9, 2403120), (10, 2162808), (12, 1802340), (15, 1441872), (16, 1351755), (17, 1272240), (18, 1201560), (19, 1138320), (20, 1081404), (24, 901170), (27, 801040), (30, 720936), (31, 697680), (34, 636120), (36, 600780), (38, 569160), (40, 540702), (45, 480624), (48, 450585), (51, 424080), (54, 400520), (57, 379440), (60, 360468), (62, 348840), (68, 318060), (72, 300390), (76, 284580), (80, 270351), (85, 254448), (90, 240312), (93, 232560), (95, 227664), (102, 212040), (108, 200260), (114, 189720), (120, 180234), (124, 174420), (135, 160208), (136, 159030), (144, 150195), (152, 142290), (153, 141360), (155, 139536), (170, 127224), (171, 126480), (180, 120156), (186, 116280), (190, 113832), (204, 106020), (216, 100130), (228, 94860), (240, 90117), (248, 87210), (255, 84816), (270, 80104), (272, 79515), (279, 77520), (285, 75888), (304, 71145), (306, 70680), (310, 69768), (323, 66960), (340, 63612), (342, 63240), (360, 60078), (372, 58140), (380, 56916), (408, 53010), (432, 50065), (456, 47430), (459, 47120), (465, 46512), (496, 43605), (510, 42408), (513, 42160), (527, 41040), (540, 40052), (558, 38760), (570, 37944), (589, 36720), (612, 35340), (620, 34884), (646, 33480), (680, 31806), (684, 31620), (720, 30039), (744, 29070), (760, 28458), (765, 28272), (816, 26505), (837, 25840), (855, 25296), (912, 23715), (918, 23560), (930, 23256), (969, 22320), (1020, 21204), (1026, 21080), (1054, 20520), (1080, 20026), (1116, 19380), (1140, 18972), (1178, 18360), (1224, 17670), (1240, 17442), (1292, 16740), (1360, 15903), (1368, 15810), (1395, 15504), (1488, 14535), (1520, 14229), (1530, 14136), (1581, 13680), (1615, 13392), (1674, 12920), (1710, 12648), (1767, 12240), (1836, 11780), (1860, 11628), (1938, 11160), (2040, 10602), (2052, 10540), (2108, 10260), (2160, 10013), (2232, 9690), (2280, 9486), (2295, 9424), (2356, 9180), (2448, 8835), (2480, 8721), (2565, 8432), (2584, 8370), (2635, 8208), (2736, 7905), (2790, 7752), (2907, 7440), (2945, 7344), (3060, 7068), (3162, 6840), (3230, 6696), (3348, 6460), (3420, 6324), (3534, 6120), (3672, 5890), (3720, 5814), (3876, 5580), (4080, 5301), (4104, 5270), (4185, 5168), (4216, 5130), (4464, 4845), (4560, 4743), (4590, 4712)]