18878161744

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{90760393}}^1$

素因数の和:90760414

約数の個数: 20

約数和(自身を含む): 39390010996

約数和(自身を除く): 20511849252

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 90760393, 181520786, 363041572, 726083144, 1179885109, 1452166288, 2359770218, 4719540436, 9439080872, 18878161744]

約数ペア:

[(1, 18878161744), (2, 9439080872), (4, 4719540436), (8, 2359770218), (13, 1452166288), (16, 1179885109), (26, 726083144), (52, 363041572), (104, 181520786), (208, 90760393)]