20525750

素因数分解:

$2^1\times 5^3\times 7^1\times {\mathrm{37}}^1\times {\mathrm{317}}^1$

素因数の和:378

約数の個数: 64

約数和(自身を含む): 45242496

約数和(自身を除く): 24716746

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 37, 50, 70, 74, 125, 175, 185, 250, 259, 317, 350, 370, 518, 634, 875, 925, 1295, 1585, 1750, 1850, 2219, 2590, 3170, 4438, 4625, 6475, 7925, 9250, 11095, 11729, 12950, 15850, 22190, 23458, 32375, 39625, 55475, 58645, 64750, 79250, 82103, 110950, 117290, 164206, 277375, 293225, 410515, 554750, 586450, 821030, 1466125, 2052575, 2932250, 4105150, 10262875, 20525750]

約数ペア:

[(1, 20525750), (2, 10262875), (5, 4105150), (7, 2932250), (10, 2052575), (14, 1466125), (25, 821030), (35, 586450), (37, 554750), (50, 410515), (70, 293225), (74, 277375), (125, 164206), (175, 117290), (185, 110950), (250, 82103), (259, 79250), (317, 64750), (350, 58645), (370, 55475), (518, 39625), (634, 32375), (875, 23458), (925, 22190), (1295, 15850), (1585, 12950), (1750, 11729), (1850, 11095), (2219, 9250), (2590, 7925), (3170, 6475), (4438, 4625)]