19889948

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{29423}}^1$

素因数の和:29453

約数の個数: 18

約数和(自身を含む): 37692144

約数和(自身を除く): 17802196

約数列:

[1, 2, 4, 13, 26, 52, 169, 338, 676, 29423, 58846, 117692, 382499, 764998, 1529996, 4972487, 9944974, 19889948]

約数ペア:

[(1, 19889948), (2, 9944974), (4, 4972487), (13, 1529996), (26, 764998), (52, 382499), (169, 117692), (338, 58846), (676, 29423)]