21096830

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{193}}^1\times {\mathrm{643}}^1$

素因数の和:860

約数の個数: 32

約数和(自身を含む): 40479264

約数和(自身を除く): 19382434

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 193, 386, 643, 965, 1286, 1930, 3215, 3281, 6430, 6562, 10931, 16405, 21862, 32810, 54655, 109310, 124099, 248198, 620495, 1240990, 2109683, 4219366, 10548415, 21096830]

約数ペア:

[(1, 21096830), (2, 10548415), (5, 4219366), (10, 2109683), (17, 1240990), (34, 620495), (85, 248198), (170, 124099), (193, 109310), (386, 54655), (643, 32810), (965, 21862), (1286, 16405), (1930, 10931), (3215, 6562), (3281, 6430)]