20872800

素因数分解:

$2^5\times 3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{223}}^1$

素因数の和:262

約数の個数: 216

約数和(自身を含む): 79619904

約数和(自身を除く): 58747104

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 25, 26, 30, 32, 36, 39, 40, 45, 48, 50, 52, 60, 65, 72, 75, 78, 80, 90, 96, 100, 104, 117, 120, 130, 144, 150, 156, 160, 180, 195, 200, 208, 223, 225, 234, 240, 260, 288, 300, 312, 325, 360, 390, 400, 416, 446, 450, 468, 480, 520, 585, 600, 624, 650, 669, 720, 780, 800, 892, 900, 936, 975, 1040, 1115, 1170, 1200, 1248, 1300, 1338, 1440, 1560, 1784, 1800, 1872, 1950, 2007, 2080, 2230, 2340, 2400, 2600, 2676, 2899, 2925, 3120, 3345, 3568, 3600, 3744, 3900, 4014, 4460, 4680, 5200, 5352, 5575, 5798, 5850, 6240, 6690, 7136, 7200, 7800, 8028, 8697, 8920, 9360, 10035, 10400, 10704, 11150, 11596, 11700, 13380, 14495, 15600, 16056, 16725, 17394, 17840, 18720, 20070, 21408, 22300, 23192, 23400, 26091, 26760, 28990, 31200, 32112, 33450, 34788, 35680, 40140, 43485, 44600, 46384, 46800, 50175, 52182, 53520, 57980, 64224, 66900, 69576, 72475, 80280, 86970, 89200, 92768, 93600, 100350, 104364, 107040, 115960, 130455, 133800, 139152, 144950, 160560, 173940, 178400, 200700, 208728, 217425, 231920, 260910, 267600, 278304, 289900, 321120, 347880, 401400, 417456, 434850, 463840, 521820, 535200, 579800, 652275, 695760, 802800, 834912, 869700, 1043640, 1159600, 1304550, 1391520, 1605600, 1739400, 2087280, 2319200, 2609100, 3478800, 4174560, 5218200, 6957600, 10436400, 20872800]

約数ペア:

[(1, 20872800), (2, 10436400), (3, 6957600), (4, 5218200), (5, 4174560), (6, 3478800), (8, 2609100), (9, 2319200), (10, 2087280), (12, 1739400), (13, 1605600), (15, 1391520), (16, 1304550), (18, 1159600), (20, 1043640), (24, 869700), (25, 834912), (26, 802800), (30, 695760), (32, 652275), (36, 579800), (39, 535200), (40, 521820), (45, 463840), (48, 434850), (50, 417456), (52, 401400), (60, 347880), (65, 321120), (72, 289900), (75, 278304), (78, 267600), (80, 260910), (90, 231920), (96, 217425), (100, 208728), (104, 200700), (117, 178400), (120, 173940), (130, 160560), (144, 144950), (150, 139152), (156, 133800), (160, 130455), (180, 115960), (195, 107040), (200, 104364), (208, 100350), (223, 93600), (225, 92768), (234, 89200), (240, 86970), (260, 80280), (288, 72475), (300, 69576), (312, 66900), (325, 64224), (360, 57980), (390, 53520), (400, 52182), (416, 50175), (446, 46800), (450, 46384), (468, 44600), (480, 43485), (520, 40140), (585, 35680), (600, 34788), (624, 33450), (650, 32112), (669, 31200), (720, 28990), (780, 26760), (800, 26091), (892, 23400), (900, 23192), (936, 22300), (975, 21408), (1040, 20070), (1115, 18720), (1170, 17840), (1200, 17394), (1248, 16725), (1300, 16056), (1338, 15600), (1440, 14495), (1560, 13380), (1784, 11700), (1800, 11596), (1872, 11150), (1950, 10704), (2007, 10400), (2080, 10035), (2230, 9360), (2340, 8920), (2400, 8697), (2600, 8028), (2676, 7800), (2899, 7200), (2925, 7136), (3120, 6690), (3345, 6240), (3568, 5850), (3600, 5798), (3744, 5575), (3900, 5352), (4014, 5200), (4460, 4680)]