21998665

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{3163}}^1$

素因数の和:3288

約数の個数: 16

約数和(自身を含む): 28703808

約数和(自身を除く): 6705143

約数列:

[1, 5, 13, 65, 107, 535, 1391, 3163, 6955, 15815, 41119, 205595, 338441, 1692205, 4399733, 21998665]

約数ペア:

[(1, 21998665), (5, 4399733), (13, 1692205), (65, 338441), (107, 205595), (535, 41119), (1391, 15815), (3163, 6955)]