40397900

素因数分解:

$2^2\times 5^2\times {\mathrm{403979}}^1$

素因数の和:403993

約数の個数: 18

約数和(自身を含む): 87663660

約数和(自身を除く): 47265760

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 403979, 807958, 1615916, 2019895, 4039790, 8079580, 10099475, 20198950, 40397900]

約数ペア:

[(1, 40397900), (2, 20198950), (4, 10099475), (5, 8079580), (10, 4039790), (20, 2019895), (25, 1615916), (50, 807958), (100, 403979)]