420172389

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{513031}}^1$

素因数の和:513057

約数の個数: 24

約数和(自身を含む): 746974592

約数和(自身を除く): 326802203

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 273, 819, 513031, 1539093, 3591217, 4617279, 6669403, 10773651, 20008209, 32320953, 46685821, 60024627, 140057463, 420172389]

約数ペア:

[(1, 420172389), (3, 140057463), (7, 60024627), (9, 46685821), (13, 32320953), (21, 20008209), (39, 10773651), (63, 6669403), (91, 4617279), (117, 3591217), (273, 1539093), (819, 513031)]