21831640

素因数分解:

$2^3\times 5^1\times {\mathrm{545791}}^1$

素因数の和:545802

約数の個数: 16

約数和(自身を含む): 49121280

約数和(自身を除く): 27289640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 545791, 1091582, 2183164, 2728955, 4366328, 5457910, 10915820, 21831640]

約数ペア:

[(1, 21831640), (2, 10915820), (4, 5457910), (5, 4366328), (8, 2728955), (10, 2183164), (20, 1091582), (40, 545791)]