20877207

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31489}}^1$

素因数の和:31522

約数の個数: 16

約数和(自身を含む): 31741920

約数和(自身を除く): 10864713

約数列:

[1, 3, 13, 17, 39, 51, 221, 663, 31489, 94467, 409357, 535313, 1228071, 1605939, 6959069, 20877207]

約数ペア:

[(1, 20877207), (3, 6959069), (13, 1605939), (17, 1228071), (39, 535313), (51, 409357), (221, 94467), (663, 31489)]