31090190

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{43789}}^1$

素因数の和:43867

約数の個数: 16

約数和(自身を含む): 56751840

約数和(自身を除く): 25661650

約数列:

[1, 2, 5, 10, 71, 142, 355, 710, 43789, 87578, 218945, 437890, 3109019, 6218038, 15545095, 31090190]

約数ペア:

[(1, 31090190), (2, 15545095), (5, 6218038), (10, 3109019), (71, 437890), (142, 218945), (355, 87578), (710, 43789)]