18917060

素因数分解:

$2^2\times 5^1\times {\mathrm{643}}^1\times {\mathrm{1471}}^1$

素因数の和:2123

約数の個数: 24

約数和(自身を含む): 39814656

約数和(自身を除く): 20897596

約数列:

[1, 2, 4, 5, 10, 20, 643, 1286, 1471, 2572, 2942, 3215, 5884, 6430, 7355, 12860, 14710, 29420, 945853, 1891706, 3783412, 4729265, 9458530, 18917060]

約数ペア:

[(1, 18917060), (2, 9458530), (4, 4729265), (5, 3783412), (10, 1891706), (20, 945853), (643, 29420), (1286, 14710), (1471, 12860), (2572, 7355), (2942, 6430), (3215, 5884)]