20993379

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{151}}^1\times {\mathrm{383}}^1$

素因数の和:559

約数の個数: 24

約数和(自身を含む): 31051776

約数和(自身を除く): 10058397

約数列:

[1, 3, 11, 33, 121, 151, 363, 383, 453, 1149, 1661, 4213, 4983, 12639, 18271, 46343, 54813, 57833, 139029, 173499, 636163, 1908489, 6997793, 20993379]

約数ペア:

[(1, 20993379), (3, 6997793), (11, 1908489), (33, 636163), (121, 173499), (151, 139029), (363, 57833), (383, 54813), (453, 46343), (1149, 18271), (1661, 12639), (4213, 4983)]