18689060

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71881}}^1$

素因数の和:71903

約数の個数: 24

約数和(自身を含む): 42266616

約数和(自身を除く): 23577556

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 71881, 143762, 287524, 359405, 718810, 934453, 1437620, 1868906, 3737812, 4672265, 9344530, 18689060]

約数ペア:

[(1, 18689060), (2, 9344530), (4, 4672265), (5, 3737812), (10, 1868906), (13, 1437620), (20, 934453), (26, 718810), (52, 359405), (65, 287524), (130, 143762), (260, 71881)]