20581418

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{71963}}^1$

素因数の和:71989

約数の個数: 16

約数和(自身を含む): 36269856

約数和(自身を除く): 15688438

約数列:

[1, 2, 11, 13, 22, 26, 143, 286, 71963, 143926, 791593, 935519, 1583186, 1871038, 10290709, 20581418]

約数ペア:

[(1, 20581418), (2, 10290709), (11, 1871038), (13, 1583186), (22, 935519), (26, 791593), (143, 143926), (286, 71963)]