25587620

素因数分解:

$2^2\times 5^1\times {\mathrm{991}}^1\times {\mathrm{1291}}^1$

素因数の和:2291

約数の個数: 24

約数和(自身を含む): 53829888

約数和(自身を除く): 28242268

約数列:

[1, 2, 4, 5, 10, 20, 991, 1291, 1982, 2582, 3964, 4955, 5164, 6455, 9910, 12910, 19820, 25820, 1279381, 2558762, 5117524, 6396905, 12793810, 25587620]

約数ペア:

[(1, 25587620), (2, 12793810), (4, 6396905), (5, 5117524), (10, 2558762), (20, 1279381), (991, 25820), (1291, 19820), (1982, 12910), (2582, 9910), (3964, 6455), (4955, 5164)]