81690830

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{628391}}^1$

素因数の和:628411

約数の個数: 16

約数和(自身を含む): 158354784

約数和(自身を除く): 76663954

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 628391, 1256782, 3141955, 6283910, 8169083, 16338166, 40845415, 81690830]

約数ペア:

[(1, 81690830), (2, 40845415), (5, 16338166), (10, 8169083), (13, 6283910), (26, 3141955), (65, 1256782), (130, 628391)]