18420493

素因数分解:

$7^1\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{677}}^1$

素因数の和:733

約数の個数: 24

約数和(自身を含む): 23822208

約数和(自身を除く): 5401715

約数列:

[1, 7, 13, 23, 91, 161, 169, 299, 677, 1183, 2093, 3887, 4739, 8801, 15571, 27209, 61607, 108997, 114413, 202423, 800891, 1416961, 2631499, 18420493]

約数ペア:

[(1, 18420493), (7, 2631499), (13, 1416961), (23, 800891), (91, 202423), (161, 114413), (169, 108997), (299, 61607), (677, 27209), (1183, 15571), (2093, 8801), (3887, 4739)]