21742500

素因数分解:

$2^2\times 3^1\times 5^4\times {\mathrm{13}}^1\times {\mathrm{223}}^1$

素因数の和:263

約数の個数: 120

約数和(自身を含む): 68578048

約数和(自身を除く): 46835548

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 25, 26, 30, 39, 50, 52, 60, 65, 75, 78, 100, 125, 130, 150, 156, 195, 223, 250, 260, 300, 325, 375, 390, 446, 500, 625, 650, 669, 750, 780, 892, 975, 1115, 1250, 1300, 1338, 1500, 1625, 1875, 1950, 2230, 2500, 2676, 2899, 3250, 3345, 3750, 3900, 4460, 4875, 5575, 5798, 6500, 6690, 7500, 8125, 8697, 9750, 11150, 11596, 13380, 14495, 16250, 16725, 17394, 19500, 22300, 24375, 27875, 28990, 32500, 33450, 34788, 43485, 48750, 55750, 57980, 66900, 72475, 83625, 86970, 97500, 111500, 139375, 144950, 167250, 173940, 217425, 278750, 289900, 334500, 362375, 418125, 434850, 557500, 724750, 836250, 869700, 1087125, 1449500, 1672500, 1811875, 2174250, 3623750, 4348500, 5435625, 7247500, 10871250, 21742500]

約数ペア:

[(1, 21742500), (2, 10871250), (3, 7247500), (4, 5435625), (5, 4348500), (6, 3623750), (10, 2174250), (12, 1811875), (13, 1672500), (15, 1449500), (20, 1087125), (25, 869700), (26, 836250), (30, 724750), (39, 557500), (50, 434850), (52, 418125), (60, 362375), (65, 334500), (75, 289900), (78, 278750), (100, 217425), (125, 173940), (130, 167250), (150, 144950), (156, 139375), (195, 111500), (223, 97500), (250, 86970), (260, 83625), (300, 72475), (325, 66900), (375, 57980), (390, 55750), (446, 48750), (500, 43485), (625, 34788), (650, 33450), (669, 32500), (750, 28990), (780, 27875), (892, 24375), (975, 22300), (1115, 19500), (1250, 17394), (1300, 16725), (1338, 16250), (1500, 14495), (1625, 13380), (1875, 11596), (1950, 11150), (2230, 9750), (2500, 8697), (2676, 8125), (2899, 7500), (3250, 6690), (3345, 6500), (3750, 5798), (3900, 5575), (4460, 4875)]