20695731

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{51869}}^1$

素因数の和:51898

約数の個数: 16

約数和(自身を含む): 33196800

約数和(自身を除く): 12501069

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 51869, 155607, 363083, 985511, 1089249, 2956533, 6898577, 20695731]

約数ペア:

[(1, 20695731), (3, 6898577), (7, 2956533), (19, 1089249), (21, 985511), (57, 363083), (133, 155607), (399, 51869)]