991315

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{151}}^1$

素因数の和:270

約数の個数: 16

約数和(自身を含む): 1302336

約数和(自身を除く): 311021

約数列:

[1, 5, 13, 65, 101, 151, 505, 755, 1313, 1963, 6565, 9815, 15251, 76255, 198263, 991315]

約数ペア:

[(1, 991315), (5, 198263), (13, 76255), (65, 15251), (101, 9815), (151, 6565), (505, 1963), (755, 1313)]