20450690

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{12101}}^1$

素因数の和:12134

約数の個数: 24

約数和(自身を含む): 39863988

約数和(自身を除く): 19413298

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 169, 338, 845, 1690, 12101, 24202, 60505, 121010, 157313, 314626, 786565, 1573130, 2045069, 4090138, 10225345, 20450690]

約数ペア:

[(1, 20450690), (2, 10225345), (5, 4090138), (10, 2045069), (13, 1573130), (26, 786565), (65, 314626), (130, 157313), (169, 121010), (338, 60505), (845, 24202), (1690, 12101)]