21831472

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{104959}}^1$

素因数の和:104980

約数の個数: 20

約数和(自身を含む): 45552640

約数和(自身を除く): 23721168

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 104959, 209918, 419836, 839672, 1364467, 1679344, 2728934, 5457868, 10915736, 21831472]

約数ペア:

[(1, 21831472), (2, 10915736), (4, 5457868), (8, 2728934), (13, 1679344), (16, 1364467), (26, 839672), (52, 419836), (104, 209918), (208, 104959)]