20891923

素因数分解:

${\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{1103}}^1$

素因数の和:1194

約数の個数: 16

約数和(自身を含む): 23740416

約数和(自身を除く): 2848493

約数列:

[1, 13, 31, 47, 403, 611, 1103, 1457, 14339, 18941, 34193, 51841, 444509, 673933, 1607071, 20891923]

約数ペア:

[(1, 20891923), (13, 1607071), (31, 673933), (47, 444509), (403, 51841), (611, 34193), (1103, 18941), (1457, 14339)]