81244960

素因数分解:

$2^5\times 5^1\times {\mathrm{507781}}^1$

素因数の和:507796

約数の個数: 24

約数和(自身を含む): 191941596

約数和(自身を除く): 110696636

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 507781, 1015562, 2031124, 2538905, 4062248, 5077810, 8124496, 10155620, 16248992, 20311240, 40622480, 81244960]

約数ペア:

[(1, 81244960), (2, 40622480), (4, 20311240), (5, 16248992), (8, 10155620), (10, 8124496), (16, 5077810), (20, 4062248), (32, 2538905), (40, 2031124), (80, 1015562), (160, 507781)]