20380204

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{349}}^1\times {\mathrm{1123}}^1$

素因数の和:1489

約数の個数: 24

約数和(自身を含む): 38553200

約数和(自身を除く): 18172996

約数列:

[1, 2, 4, 13, 26, 52, 349, 698, 1123, 1396, 2246, 4492, 4537, 9074, 14599, 18148, 29198, 58396, 391927, 783854, 1567708, 5095051, 10190102, 20380204]

約数ペア:

[(1, 20380204), (2, 10190102), (4, 5095051), (13, 1567708), (26, 783854), (52, 391927), (349, 58396), (698, 29198), (1123, 18148), (1396, 14599), (2246, 9074), (4492, 4537)]