18149872

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{1229}}^1$

素因数の和:1321

約数の個数: 40

約数和(自身を含む): 38435040

約数和(自身を除く): 20285168

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 71, 104, 142, 208, 284, 568, 923, 1136, 1229, 1846, 2458, 3692, 4916, 7384, 9832, 14768, 15977, 19664, 31954, 63908, 87259, 127816, 174518, 255632, 349036, 698072, 1134367, 1396144, 2268734, 4537468, 9074936, 18149872]

約数ペア:

[(1, 18149872), (2, 9074936), (4, 4537468), (8, 2268734), (13, 1396144), (16, 1134367), (26, 698072), (52, 349036), (71, 255632), (104, 174518), (142, 127816), (208, 87259), (284, 63908), (568, 31954), (923, 19664), (1136, 15977), (1229, 14768), (1846, 9832), (2458, 7384), (3692, 4916)]