31107980

素因数分解:

$2^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{9907}}^1$

素因数の和:10073

約数の個数: 24

約数和(自身を含む): 65749488

約数和(自身を除く): 34641508

約数列:

[1, 2, 4, 5, 10, 20, 157, 314, 628, 785, 1570, 3140, 9907, 19814, 39628, 49535, 99070, 198140, 1555399, 3110798, 6221596, 7776995, 15553990, 31107980]

約数ペア:

[(1, 31107980), (2, 15553990), (4, 7776995), (5, 6221596), (10, 3110798), (20, 1555399), (157, 198140), (314, 99070), (628, 49535), (785, 39628), (1570, 19814), (3140, 9907)]