18918861

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{227}}^1\times {\mathrm{2137}}^1$

素因数の和:2380

約数の個数: 16

約数和(自身を含む): 27297984

約数和(自身を除く): 8379123

約数列:

[1, 3, 13, 39, 227, 681, 2137, 2951, 6411, 8853, 27781, 83343, 485099, 1455297, 6306287, 18918861]

約数ペア:

[(1, 18918861), (3, 6306287), (13, 1455297), (39, 485099), (227, 83343), (681, 27781), (2137, 8853), (2951, 6411)]