20318919

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{5081}}^1$

素因数の和:5158

約数の個数: 16

約数和(自身を含む): 28621824

約数和(自身を除く): 8302905

約数列:

[1, 3, 31, 43, 93, 129, 1333, 3999, 5081, 15243, 157511, 218483, 472533, 655449, 6772973, 20318919]

約数ペア:

[(1, 20318919), (3, 6772973), (31, 655449), (43, 472533), (93, 218483), (129, 157511), (1333, 15243), (3999, 5081)]