18712595

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{397}}^1\times {\mathrm{857}}^1$

素因数の和:1270

約数の個数: 16

約数和(自身を含む): 24586848

約数和(自身を除く): 5874253

約数列:

[1, 5, 11, 55, 397, 857, 1985, 4285, 4367, 9427, 21835, 47135, 340229, 1701145, 3742519, 18712595]

約数ペア:

[(1, 18712595), (5, 3742519), (11, 1701145), (55, 340229), (397, 47135), (857, 21835), (1985, 9427), (4285, 4367)]