81930020

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{31271}}^1$

素因数の和:31411

約数の個数: 24

約数和(自身を含む): 173371968

約数和(自身を除く): 91441948

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 2620, 31271, 62542, 125084, 156355, 312710, 625420, 4096501, 8193002, 16386004, 20482505, 40965010, 81930020]

約数ペア:

[(1, 81930020), (2, 40965010), (4, 20482505), (5, 16386004), (10, 8193002), (20, 4096501), (131, 625420), (262, 312710), (524, 156355), (655, 125084), (1310, 62542), (2620, 31271)]