21180860

素因数分解:

$2^2\times 5^1\times {\mathrm{757}}^1\times {\mathrm{1399}}^1$

素因数の和:2165

約数の個数: 24

約数和(自身を含む): 44570400

約数和(自身を除く): 23389540

約数列:

[1, 2, 4, 5, 10, 20, 757, 1399, 1514, 2798, 3028, 3785, 5596, 6995, 7570, 13990, 15140, 27980, 1059043, 2118086, 4236172, 5295215, 10590430, 21180860]

約数ペア:

[(1, 21180860), (2, 10590430), (4, 5295215), (5, 4236172), (10, 2118086), (20, 1059043), (757, 27980), (1399, 15140), (1514, 13990), (2798, 7570), (3028, 6995), (3785, 5596)]