20917449

素因数分解:

$3^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{5443}}^1$

素因数の和:5517

約数の個数: 24

約数和(自身を含む): 35102912

約数和(自身を除く): 14185463

約数列:

[1, 3, 7, 9, 21, 61, 63, 183, 427, 549, 1281, 3843, 5443, 16329, 38101, 48987, 114303, 332023, 342909, 996069, 2324161, 2988207, 6972483, 20917449]

約数ペア:

[(1, 20917449), (3, 6972483), (7, 2988207), (9, 2324161), (21, 996069), (61, 342909), (63, 332023), (183, 114303), (427, 48987), (549, 38101), (1281, 16329), (3843, 5443)]