21299760

素因数分解:

$2^4\times 3^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{173}}^1$

素因数の和:217

約数の個数: 200

約数和(自身を含む): 78320880

約数和(自身を除く): 57021120

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 19, 20, 24, 27, 30, 36, 38, 40, 45, 48, 54, 57, 60, 72, 76, 80, 81, 90, 95, 108, 114, 120, 135, 144, 152, 162, 171, 173, 180, 190, 216, 228, 240, 270, 285, 304, 324, 342, 346, 360, 380, 405, 432, 456, 513, 519, 540, 570, 648, 684, 692, 720, 760, 810, 855, 865, 912, 1026, 1038, 1080, 1140, 1296, 1368, 1384, 1520, 1539, 1557, 1620, 1710, 1730, 2052, 2076, 2160, 2280, 2565, 2595, 2736, 2768, 3078, 3114, 3240, 3287, 3420, 3460, 4104, 4152, 4560, 4671, 5130, 5190, 6156, 6228, 6480, 6574, 6840, 6920, 7695, 7785, 8208, 8304, 9342, 9861, 10260, 10380, 12312, 12456, 13148, 13680, 13840, 14013, 15390, 15570, 16435, 18684, 19722, 20520, 20760, 23355, 24624, 24912, 26296, 28026, 29583, 30780, 31140, 32870, 37368, 39444, 41040, 41520, 46710, 49305, 52592, 56052, 59166, 61560, 62280, 65740, 70065, 74736, 78888, 88749, 93420, 98610, 112104, 118332, 123120, 124560, 131480, 140130, 147915, 157776, 177498, 186840, 197220, 224208, 236664, 262960, 266247, 280260, 295830, 354996, 373680, 394440, 443745, 473328, 532494, 560520, 591660, 709992, 788880, 887490, 1064988, 1121040, 1183320, 1331235, 1419984, 1774980, 2129976, 2366640, 2662470, 3549960, 4259952, 5324940, 7099920, 10649880, 21299760]

約数ペア:

[(1, 21299760), (2, 10649880), (3, 7099920), (4, 5324940), (5, 4259952), (6, 3549960), (8, 2662470), (9, 2366640), (10, 2129976), (12, 1774980), (15, 1419984), (16, 1331235), (18, 1183320), (19, 1121040), (20, 1064988), (24, 887490), (27, 788880), (30, 709992), (36, 591660), (38, 560520), (40, 532494), (45, 473328), (48, 443745), (54, 394440), (57, 373680), (60, 354996), (72, 295830), (76, 280260), (80, 266247), (81, 262960), (90, 236664), (95, 224208), (108, 197220), (114, 186840), (120, 177498), (135, 157776), (144, 147915), (152, 140130), (162, 131480), (171, 124560), (173, 123120), (180, 118332), (190, 112104), (216, 98610), (228, 93420), (240, 88749), (270, 78888), (285, 74736), (304, 70065), (324, 65740), (342, 62280), (346, 61560), (360, 59166), (380, 56052), (405, 52592), (432, 49305), (456, 46710), (513, 41520), (519, 41040), (540, 39444), (570, 37368), (648, 32870), (684, 31140), (692, 30780), (720, 29583), (760, 28026), (810, 26296), (855, 24912), (865, 24624), (912, 23355), (1026, 20760), (1038, 20520), (1080, 19722), (1140, 18684), (1296, 16435), (1368, 15570), (1384, 15390), (1520, 14013), (1539, 13840), (1557, 13680), (1620, 13148), (1710, 12456), (1730, 12312), (2052, 10380), (2076, 10260), (2160, 9861), (2280, 9342), (2565, 8304), (2595, 8208), (2736, 7785), (2768, 7695), (3078, 6920), (3114, 6840), (3240, 6574), (3287, 6480), (3420, 6228), (3460, 6156), (4104, 5190), (4152, 5130), (4560, 4671)]