331540240

素因数分解:

$2^4\times 5^1\times {\mathrm{4144253}}^1$

素因数の和:4144266

約数の個数: 20

約数和(自身を含む): 770831244

約数和(自身を除く): 439291004

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 4144253, 8288506, 16577012, 20721265, 33154024, 41442530, 66308048, 82885060, 165770120, 331540240]

約数ペア:

[(1, 331540240), (2, 165770120), (4, 82885060), (5, 66308048), (8, 41442530), (10, 33154024), (16, 20721265), (20, 16577012), (40, 8288506), (80, 4144253)]