21175480

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{17077}}^1$

素因数の和:17119

約数の個数: 32

約数和(自身を含む): 49184640

約数和(自身を除く): 28009160

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 17077, 34154, 68308, 85385, 136616, 170770, 341540, 529387, 683080, 1058774, 2117548, 2646935, 4235096, 5293870, 10587740, 21175480]

約数ペア:

[(1, 21175480), (2, 10587740), (4, 5293870), (5, 4235096), (8, 2646935), (10, 2117548), (20, 1058774), (31, 683080), (40, 529387), (62, 341540), (124, 170770), (155, 136616), (248, 85385), (310, 68308), (620, 34154), (1240, 17077)]