19903468

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{29443}}^1$

素因数の和:29473

約数の個数: 18

約数和(自身を含む): 37717764

約数和(自身を除く): 17814296

約数列:

[1, 2, 4, 13, 26, 52, 169, 338, 676, 29443, 58886, 117772, 382759, 765518, 1531036, 4975867, 9951734, 19903468]

約数ペア:

[(1, 19903468), (2, 9951734), (4, 4975867), (13, 1531036), (26, 765518), (52, 382759), (169, 117772), (338, 58886), (676, 29443)]