20438733

素因数分解:

$3^1\times 7^2\times {\mathrm{163}}^1\times {\mathrm{853}}^1$

素因数の和:1033

約数の個数: 24

約数和(自身を含む): 31932768

約数和(自身を除く): 11494035

約数列:

[1, 3, 7, 21, 49, 147, 163, 489, 853, 1141, 2559, 3423, 5971, 7987, 17913, 23961, 41797, 125391, 139039, 417117, 973273, 2919819, 6812911, 20438733]

約数ペア:

[(1, 20438733), (3, 6812911), (7, 2919819), (21, 973273), (49, 417117), (147, 139039), (163, 125391), (489, 41797), (853, 23961), (1141, 17913), (2559, 7987), (3423, 5971)]