20139951

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{821}}^1$

素因数の和:891

約数の個数: 32

約数和(自身を含む): 31485888

約数和(自身を除く): 11345937

約数列:

[1, 3, 13, 17, 37, 39, 51, 111, 221, 481, 629, 663, 821, 1443, 1887, 2463, 8177, 10673, 13957, 24531, 30377, 32019, 41871, 91131, 181441, 394901, 516409, 544323, 1184703, 1549227, 6713317, 20139951]

約数ペア:

[(1, 20139951), (3, 6713317), (13, 1549227), (17, 1184703), (37, 544323), (39, 516409), (51, 394901), (111, 181441), (221, 91131), (481, 41871), (629, 32019), (663, 30377), (821, 24531), (1443, 13957), (1887, 10673), (2463, 8177)]