81507088

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{391861}}^1$

素因数の和:391882

約数の個数: 20

約数和(自身を含む): 170068108

約数和(自身を除く): 88561020

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 391861, 783722, 1567444, 3134888, 5094193, 6269776, 10188386, 20376772, 40753544, 81507088]

約数ペア:

[(1, 81507088), (2, 40753544), (4, 20376772), (8, 10188386), (13, 6269776), (16, 5094193), (26, 3134888), (52, 1567444), (104, 783722), (208, 391861)]