51091420

素因数分解:

$2^2\times 5^1\times {\mathrm{281}}^1\times {\mathrm{9091}}^1$

素因数の和:9381

約数の個数: 24

約数和(自身を含む): 107685648

約数和(自身を除く): 56594228

約数列:

[1, 2, 4, 5, 10, 20, 281, 562, 1124, 1405, 2810, 5620, 9091, 18182, 36364, 45455, 90910, 181820, 2554571, 5109142, 10218284, 12772855, 25545710, 51091420]

約数ペア:

[(1, 51091420), (2, 25545710), (4, 12772855), (5, 10218284), (10, 5109142), (20, 2554571), (281, 181820), (562, 90910), (1124, 45455), (1405, 36364), (2810, 18182), (5620, 9091)]