18555760

素因数分解:

$2^4\times 5^1\times {\mathrm{231947}}^1$

素因数の和:231960

約数の個数: 20

約数和(自身を含む): 43142328

約数和(自身を除く): 24586568

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 231947, 463894, 927788, 1159735, 1855576, 2319470, 3711152, 4638940, 9277880, 18555760]

約数ペア:

[(1, 18555760), (2, 9277880), (4, 4638940), (5, 3711152), (8, 2319470), (10, 1855576), (16, 1159735), (20, 927788), (40, 463894), (80, 231947)]