81086380

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{30949}}^1$

素因数の和:31089

約数の個数: 24

約数和(自身を含む): 171586800

約数和(自身を除く): 90500420

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 2620, 30949, 61898, 123796, 154745, 309490, 618980, 4054319, 8108638, 16217276, 20271595, 40543190, 81086380]

約数ペア:

[(1, 81086380), (2, 40543190), (4, 20271595), (5, 16217276), (10, 8108638), (20, 4054319), (131, 618980), (262, 309490), (524, 154745), (655, 123796), (1310, 61898), (2620, 30949)]