21700156

素因数分解:

$2^2\times {\mathrm{71}}^1\times {\mathrm{109}}^1\times {\mathrm{701}}^1$

素因数の和:885

約数の個数: 24

約数和(自身を含む): 38918880

約数和(自身を除く): 17218724

約数列:

[1, 2, 4, 71, 109, 142, 218, 284, 436, 701, 1402, 2804, 7739, 15478, 30956, 49771, 76409, 99542, 152818, 199084, 305636, 5425039, 10850078, 21700156]

約数ペア:

[(1, 21700156), (2, 10850078), (4, 5425039), (71, 305636), (109, 199084), (142, 152818), (218, 99542), (284, 76409), (436, 49771), (701, 30956), (1402, 15478), (2804, 7739)]