25646620

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{18061}}^1$

素因数の和:18141

約数の個数: 24

約数和(自身を含む): 54619488

約数和(自身を除く): 28972868

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 18061, 36122, 72244, 90305, 180610, 361220, 1282331, 2564662, 5129324, 6411655, 12823310, 25646620]

約数ペア:

[(1, 25646620), (2, 12823310), (4, 6411655), (5, 5129324), (10, 2564662), (20, 1282331), (71, 361220), (142, 180610), (284, 90305), (355, 72244), (710, 36122), (1420, 18061)]