21000746720

素因数分解:

$2^5\times 5^1\times {\mathrm{29}}^1\times {\mathrm{1217}}^1\times {\mathrm{3719}}^1$

素因数の和:4980

約数の個数: 96

約数和(自身を含む): 51381086400

約数和(自身を除く): 30380339680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 58, 80, 116, 145, 160, 232, 290, 464, 580, 928, 1160, 1217, 2320, 2434, 3719, 4640, 4868, 6085, 7438, 9736, 12170, 14876, 18595, 19472, 24340, 29752, 35293, 37190, 38944, 48680, 59504, 70586, 74380, 97360, 107851, 119008, 141172, 148760, 176465, 194720, 215702, 282344, 297520, 352930, 431404, 539255, 564688, 595040, 705860, 862808, 1078510, 1129376, 1411720, 1725616, 2157020, 2823440, 3451232, 4314040, 4526023, 5646880, 8628080, 9052046, 17256160, 18104092, 22630115, 36208184, 45260230, 72416368, 90520460, 131254667, 144832736, 181040920, 262509334, 362081840, 525018668, 656273335, 724163680, 1050037336, 1312546670, 2100074672, 2625093340, 4200149344, 5250186680, 10500373360, 21000746720]

約数ペア:

[(1, 21000746720), (2, 10500373360), (4, 5250186680), (5, 4200149344), (8, 2625093340), (10, 2100074672), (16, 1312546670), (20, 1050037336), (29, 724163680), (32, 656273335), (40, 525018668), (58, 362081840), (80, 262509334), (116, 181040920), (145, 144832736), (160, 131254667), (232, 90520460), (290, 72416368), (464, 45260230), (580, 36208184), (928, 22630115), (1160, 18104092), (1217, 17256160), (2320, 9052046), (2434, 8628080), (3719, 5646880), (4640, 4526023), (4868, 4314040), (6085, 3451232), (7438, 2823440), (9736, 2157020), (12170, 1725616), (14876, 1411720), (18595, 1129376), (19472, 1078510), (24340, 862808), (29752, 705860), (35293, 595040), (37190, 564688), (38944, 539255), (48680, 431404), (59504, 352930), (70586, 297520), (74380, 282344), (97360, 215702), (107851, 194720), (119008, 176465), (141172, 148760)]