39997490

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{3457}}^1$

素因数の和:3566

約数の個数: 32

約数和(自身を含む): 78427440

約数和(自身を除く): 38429950

約数列:

[1, 2, 5, 10, 13, 26, 65, 89, 130, 178, 445, 890, 1157, 2314, 3457, 5785, 6914, 11570, 17285, 34570, 44941, 89882, 224705, 307673, 449410, 615346, 1538365, 3076730, 3999749, 7999498, 19998745, 39997490]

約数ペア:

[(1, 39997490), (2, 19998745), (5, 7999498), (10, 3999749), (13, 3076730), (26, 1538365), (65, 615346), (89, 449410), (130, 307673), (178, 224705), (445, 89882), (890, 44941), (1157, 34570), (2314, 17285), (3457, 11570), (5785, 6914)]