389610280

素因数分解:

$2^3\times 5^1\times {\mathrm{9740257}}^1$

素因数の和:9740268

約数の個数: 16

約数和(自身を含む): 876623220

約数和(自身を除く): 487012940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 9740257, 19480514, 38961028, 48701285, 77922056, 97402570, 194805140, 389610280]

約数ペア:

[(1, 389610280), (2, 194805140), (4, 97402570), (5, 77922056), (8, 48701285), (10, 38961028), (20, 19480514), (40, 9740257)]