31071980

素因数分解:

$2^2\times 5^1\times {\mathrm{727}}^1\times {\mathrm{2137}}^1$

素因数の和:2873

約数の個数: 24

約数和(自身を含む): 65371488

約数和(自身を除く): 34299508

約数列:

[1, 2, 4, 5, 10, 20, 727, 1454, 2137, 2908, 3635, 4274, 7270, 8548, 10685, 14540, 21370, 42740, 1553599, 3107198, 6214396, 7767995, 15535990, 31071980]

約数ペア:

[(1, 31071980), (2, 15535990), (4, 7767995), (5, 6214396), (10, 3107198), (20, 1553599), (727, 42740), (1454, 21370), (2137, 14540), (2908, 10685), (3635, 8548), (4274, 7270)]