31887880

素因数分解:

$2^3\times 5^1\times {\mathrm{281}}^1\times {\mathrm{2837}}^1$

素因数の和:3129

約数の個数: 32

約数和(自身を含む): 72028440

約数和(自身を除く): 40140560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 281, 562, 1124, 1405, 2248, 2810, 2837, 5620, 5674, 11240, 11348, 14185, 22696, 28370, 56740, 113480, 797197, 1594394, 3188788, 3985985, 6377576, 7971970, 15943940, 31887880]

約数ペア:

[(1, 31887880), (2, 15943940), (4, 7971970), (5, 6377576), (8, 3985985), (10, 3188788), (20, 1594394), (40, 797197), (281, 113480), (562, 56740), (1124, 28370), (1405, 22696), (2248, 14185), (2810, 11348), (2837, 11240), (5620, 5674)]