21943779

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{51151}}^1$

素因数の和:51178

約数の個数: 16

約数和(自身を含む): 34374144

約数和(自身を除く): 12430365

約数列:

[1, 3, 11, 13, 33, 39, 143, 429, 51151, 153453, 562661, 664963, 1687983, 1994889, 7314593, 21943779]

約数ペア:

[(1, 21943779), (3, 7314593), (11, 1994889), (13, 1687983), (33, 664963), (39, 562661), (143, 153453), (429, 51151)]