31225840

素因数分解:

$2^4\times 5^1\times {\mathrm{390323}}^1$

素因数の和:390336

約数の個数: 20

約数和(自身を含む): 72600264

約数和(自身を除く): 41374424

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 390323, 780646, 1561292, 1951615, 3122584, 3903230, 6245168, 7806460, 15612920, 31225840]

約数ペア:

[(1, 31225840), (2, 15612920), (4, 7806460), (5, 6245168), (8, 3903230), (10, 3122584), (16, 1951615), (20, 1561292), (40, 780646), (80, 390323)]