20000812

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{29587}}^1$

素因数の和:29617

約数の個数: 18

約数和(自身を含む): 37902228

約数和(自身を除く): 17901416

約数列:

[1, 2, 4, 13, 26, 52, 169, 338, 676, 29587, 59174, 118348, 384631, 769262, 1538524, 5000203, 10000406, 20000812]

約数ペア:

[(1, 20000812), (2, 10000406), (4, 5000203), (13, 1538524), (26, 769262), (52, 384631), (169, 118348), (338, 59174), (676, 29587)]