19942960

素因数分解:

$2^4\times 5^1\times {\mathrm{249287}}^1$

素因数の和:249300

約数の個数: 20

約数和(自身を含む): 46367568

約数和(自身を除く): 26424608

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 249287, 498574, 997148, 1246435, 1994296, 2492870, 3988592, 4985740, 9971480, 19942960]

約数ペア:

[(1, 19942960), (2, 9971480), (4, 4985740), (5, 3988592), (8, 2492870), (10, 1994296), (16, 1246435), (20, 997148), (40, 498574), (80, 249287)]