21189460

素因数分解:

$2^2\times 5^1\times {\mathrm{223}}^1\times {\mathrm{4751}}^1$

素因数の和:4983

約数の個数: 24

約数和(自身を含む): 44706816

約数和(自身を除く): 23517356

約数列:

[1, 2, 4, 5, 10, 20, 223, 446, 892, 1115, 2230, 4460, 4751, 9502, 19004, 23755, 47510, 95020, 1059473, 2118946, 4237892, 5297365, 10594730, 21189460]

約数ペア:

[(1, 21189460), (2, 10594730), (4, 5297365), (5, 4237892), (10, 2118946), (20, 1059473), (223, 95020), (446, 47510), (892, 23755), (1115, 19004), (2230, 9502), (4460, 4751)]