20339979

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{137}}^1\times {\mathrm{409}}^1$

素因数の和:571

約数の個数: 24

約数和(自身を含む): 30100560

約数和(自身を除く): 9760581

約数列:

[1, 3, 11, 33, 121, 137, 363, 409, 411, 1227, 1507, 4499, 4521, 13497, 16577, 49489, 49731, 56033, 148467, 168099, 616363, 1849089, 6779993, 20339979]

約数ペア:

[(1, 20339979), (3, 6779993), (11, 1849089), (33, 616363), (121, 168099), (137, 148467), (363, 56033), (409, 49731), (411, 49489), (1227, 16577), (1507, 13497), (4499, 4521)]