21931640

素因数分解:

$2^3\times 5^1\times {\mathrm{548291}}^1$

素因数の和:548302

約数の個数: 16

約数和(自身を含む): 49346280

約数和(自身を除く): 27414640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 548291, 1096582, 2193164, 2741455, 4386328, 5482910, 10965820, 21931640]

約数ペア:

[(1, 21931640), (2, 10965820), (4, 5482910), (5, 4386328), (8, 2741455), (10, 2193164), (20, 1096582), (40, 548291)]