1990805528

素因数分解:

$2^3\times {\mathrm{389}}^1\times {\mathrm{639719}}^1$

素因数の和:640114

約数の個数: 16

約数和(自身を含む): 3742362000

約数和(自身を除く): 1751556472

約数列:

[1, 2, 4, 8, 389, 778, 1556, 3112, 639719, 1279438, 2558876, 5117752, 248850691, 497701382, 995402764, 1990805528]

約数ペア:

[(1, 1990805528), (2, 995402764), (4, 497701382), (8, 248850691), (389, 5117752), (778, 2558876), (1556, 1279438), (3112, 639719)]