286491640

素因数分解:

$2^3\times 5^1\times {\mathrm{2131}}^1\times {\mathrm{3361}}^1$

素因数の和:5503

約数の個数: 32

約数和(自身を含む): 645100560

約数和(自身を除く): 358608920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2131, 3361, 4262, 6722, 8524, 10655, 13444, 16805, 17048, 21310, 26888, 33610, 42620, 67220, 85240, 134440, 7162291, 14324582, 28649164, 35811455, 57298328, 71622910, 143245820, 286491640]

約数ペア:

[(1, 286491640), (2, 143245820), (4, 71622910), (5, 57298328), (8, 35811455), (10, 28649164), (20, 14324582), (40, 7162291), (2131, 134440), (3361, 85240), (4262, 67220), (6722, 42620), (8524, 33610), (10655, 26888), (13444, 21310), (16805, 17048)]