20213793

素因数分解:

$3^4\times {\mathrm{163}}^1\times {\mathrm{1531}}^1$

素因数の和:1706

約数の個数: 20

約数和(自身を含む): 30401008

約数和(自身を除く): 10187215

約数列:

[1, 3, 9, 27, 81, 163, 489, 1467, 1531, 4401, 4593, 13203, 13779, 41337, 124011, 249553, 748659, 2245977, 6737931, 20213793]

約数ペア:

[(1, 20213793), (3, 6737931), (9, 2245977), (27, 748659), (81, 249553), (163, 124011), (489, 41337), (1467, 13779), (1531, 13203), (4401, 4593)]