21242520

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1$

素因数の和:139

約数の個数: 256

約数和(自身を含む): 81648000

約数和(自身を除く): 60405480

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 17, 18, 20, 24, 26, 27, 30, 34, 36, 39, 40, 45, 51, 52, 54, 60, 65, 68, 72, 78, 85, 89, 90, 102, 104, 108, 117, 120, 130, 135, 136, 153, 156, 170, 178, 180, 195, 204, 216, 221, 234, 255, 260, 267, 270, 306, 312, 340, 351, 356, 360, 390, 408, 442, 445, 459, 468, 510, 520, 534, 540, 585, 612, 663, 680, 702, 712, 765, 780, 801, 884, 890, 918, 936, 1020, 1068, 1080, 1105, 1157, 1170, 1224, 1326, 1335, 1404, 1513, 1530, 1560, 1602, 1755, 1768, 1780, 1836, 1989, 2040, 2136, 2210, 2295, 2314, 2340, 2403, 2652, 2670, 2808, 3026, 3060, 3204, 3315, 3471, 3510, 3560, 3672, 3978, 4005, 4420, 4539, 4590, 4628, 4680, 4806, 5304, 5340, 5785, 5967, 6052, 6120, 6408, 6630, 6942, 7020, 7565, 7956, 8010, 8840, 9078, 9180, 9256, 9612, 9945, 10413, 10680, 11570, 11934, 12015, 12104, 13260, 13617, 13884, 14040, 15130, 15912, 16020, 17355, 18156, 18360, 19224, 19669, 19890, 20826, 22695, 23140, 23868, 24030, 26520, 27234, 27768, 29835, 30260, 31239, 32040, 34710, 36312, 39338, 39780, 40851, 41652, 45390, 46280, 47736, 48060, 52065, 54468, 59007, 59670, 60520, 62478, 68085, 69420, 78676, 79560, 81702, 83304, 90780, 96120, 98345, 104130, 108936, 118014, 119340, 124956, 136170, 138840, 156195, 157352, 163404, 177021, 181560, 196690, 204255, 208260, 236028, 238680, 249912, 272340, 295035, 312390, 326808, 354042, 393380, 408510, 416520, 472056, 531063, 544680, 590070, 624780, 708084, 786760, 817020, 885105, 1062126, 1180140, 1249560, 1416168, 1634040, 1770210, 2124252, 2360280, 2655315, 3540420, 4248504, 5310630, 7080840, 10621260, 21242520]

約数ペア:

[(1, 21242520), (2, 10621260), (3, 7080840), (4, 5310630), (5, 4248504), (6, 3540420), (8, 2655315), (9, 2360280), (10, 2124252), (12, 1770210), (13, 1634040), (15, 1416168), (17, 1249560), (18, 1180140), (20, 1062126), (24, 885105), (26, 817020), (27, 786760), (30, 708084), (34, 624780), (36, 590070), (39, 544680), (40, 531063), (45, 472056), (51, 416520), (52, 408510), (54, 393380), (60, 354042), (65, 326808), (68, 312390), (72, 295035), (78, 272340), (85, 249912), (89, 238680), (90, 236028), (102, 208260), (104, 204255), (108, 196690), (117, 181560), (120, 177021), (130, 163404), (135, 157352), (136, 156195), (153, 138840), (156, 136170), (170, 124956), (178, 119340), (180, 118014), (195, 108936), (204, 104130), (216, 98345), (221, 96120), (234, 90780), (255, 83304), (260, 81702), (267, 79560), (270, 78676), (306, 69420), (312, 68085), (340, 62478), (351, 60520), (356, 59670), (360, 59007), (390, 54468), (408, 52065), (442, 48060), (445, 47736), (459, 46280), (468, 45390), (510, 41652), (520, 40851), (534, 39780), (540, 39338), (585, 36312), (612, 34710), (663, 32040), (680, 31239), (702, 30260), (712, 29835), (765, 27768), (780, 27234), (801, 26520), (884, 24030), (890, 23868), (918, 23140), (936, 22695), (1020, 20826), (1068, 19890), (1080, 19669), (1105, 19224), (1157, 18360), (1170, 18156), (1224, 17355), (1326, 16020), (1335, 15912), (1404, 15130), (1513, 14040), (1530, 13884), (1560, 13617), (1602, 13260), (1755, 12104), (1768, 12015), (1780, 11934), (1836, 11570), (1989, 10680), (2040, 10413), (2136, 9945), (2210, 9612), (2295, 9256), (2314, 9180), (2340, 9078), (2403, 8840), (2652, 8010), (2670, 7956), (2808, 7565), (3026, 7020), (3060, 6942), (3204, 6630), (3315, 6408), (3471, 6120), (3510, 6052), (3560, 5967), (3672, 5785), (3978, 5340), (4005, 5304), (4420, 4806), (4539, 4680), (4590, 4628)]