19561467

素因数分解:

$3^1\times {\mathrm{109}}^1\times {\mathrm{163}}^1\times {\mathrm{367}}^1$

素因数の和:642

約数の個数: 16

約数和(自身を含む): 26554880

約数和(自身を除く): 6993413

約数列:

[1, 3, 109, 163, 327, 367, 489, 1101, 17767, 40003, 53301, 59821, 120009, 179463, 6520489, 19561467]

約数ペア:

[(1, 19561467), (3, 6520489), (109, 179463), (163, 120009), (327, 59821), (367, 53301), (489, 40003), (1101, 17767)]