51057520

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{101}}^1$

素因数の和:274

約数の個数: 80

約数和(自身を含む): 122938560

約数和(自身を除く): 71881040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 89, 101, 142, 178, 202, 284, 355, 356, 404, 445, 505, 568, 710, 712, 808, 890, 1010, 1136, 1420, 1424, 1616, 1780, 2020, 2840, 3560, 4040, 5680, 6319, 7120, 7171, 8080, 8989, 12638, 14342, 17978, 25276, 28684, 31595, 35855, 35956, 44945, 50552, 57368, 63190, 71710, 71912, 89890, 101104, 114736, 126380, 143420, 143824, 179780, 252760, 286840, 359560, 505520, 573680, 638219, 719120, 1276438, 2552876, 3191095, 5105752, 6382190, 10211504, 12764380, 25528760, 51057520]

約数ペア:

[(1, 51057520), (2, 25528760), (4, 12764380), (5, 10211504), (8, 6382190), (10, 5105752), (16, 3191095), (20, 2552876), (40, 1276438), (71, 719120), (80, 638219), (89, 573680), (101, 505520), (142, 359560), (178, 286840), (202, 252760), (284, 179780), (355, 143824), (356, 143420), (404, 126380), (445, 114736), (505, 101104), (568, 89890), (710, 71912), (712, 71710), (808, 63190), (890, 57368), (1010, 50552), (1136, 44945), (1420, 35956), (1424, 35855), (1616, 31595), (1780, 28684), (2020, 25276), (2840, 17978), (3560, 14342), (4040, 12638), (5680, 8989), (6319, 8080), (7120, 7171)]