31704440

素因数分解:

$2^3\times 5^1\times {\mathrm{557}}^1\times {\mathrm{1423}}^1$

素因数の和:1991

約数の個数: 32

約数和(自身を含む): 71513280

約数和(自身を除く): 39808840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 557, 1114, 1423, 2228, 2785, 2846, 4456, 5570, 5692, 7115, 11140, 11384, 14230, 22280, 28460, 56920, 792611, 1585222, 3170444, 3963055, 6340888, 7926110, 15852220, 31704440]

約数ペア:

[(1, 31704440), (2, 15852220), (4, 7926110), (5, 6340888), (8, 3963055), (10, 3170444), (20, 1585222), (40, 792611), (557, 56920), (1114, 28460), (1423, 22280), (2228, 14230), (2785, 11384), (2846, 11140), (4456, 7115), (5570, 5692)]