25516760

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{15559}}^1$

素因数の和:15611

約数の個数: 32

約数和(自身を含む): 58816800

約数和(自身を除く): 33300040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 15559, 31118, 62236, 77795, 124472, 155590, 311180, 622360, 637919, 1275838, 2551676, 3189595, 5103352, 6379190, 12758380, 25516760]

約数ペア:

[(1, 25516760), (2, 12758380), (4, 6379190), (5, 5103352), (8, 3189595), (10, 2551676), (20, 1275838), (40, 637919), (41, 622360), (82, 311180), (164, 155590), (205, 124472), (328, 77795), (410, 62236), (820, 31118), (1640, 15559)]