21069640

素因数分解:

$2^3\times 5^1\times {\mathrm{526741}}^1$

素因数の和:526752

約数の個数: 16

約数和(自身を含む): 47406780

約数和(自身を除く): 26337140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 526741, 1053482, 2106964, 2633705, 4213928, 5267410, 10534820, 21069640]

約数ペア:

[(1, 21069640), (2, 10534820), (4, 5267410), (5, 4213928), (8, 2633705), (10, 2106964), (20, 1053482), (40, 526741)]