25538840

素因数分解:

$2^3\times 5^1\times {\mathrm{163}}^1\times {\mathrm{3917}}^1$

素因数の和:4091

約数の個数: 32

約数和(自身を含む): 57829680

約数和(自身を除く): 32290840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 163, 326, 652, 815, 1304, 1630, 3260, 3917, 6520, 7834, 15668, 19585, 31336, 39170, 78340, 156680, 638471, 1276942, 2553884, 3192355, 5107768, 6384710, 12769420, 25538840]

約数ペア:

[(1, 25538840), (2, 12769420), (4, 6384710), (5, 5107768), (8, 3192355), (10, 2553884), (20, 1276942), (40, 638471), (163, 156680), (326, 78340), (652, 39170), (815, 31336), (1304, 19585), (1630, 15668), (3260, 7834), (3917, 6520)]