408403760

素因数分解:

$2^4\times 5^1\times {\mathrm{5105047}}^1$

素因数の和:5105060

約数の個数: 20

約数和(自身を含む): 949538928

約数和(自身を除く): 541135168

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 5105047, 10210094, 20420188, 25525235, 40840376, 51050470, 81680752, 102100940, 204201880, 408403760]

約数ペア:

[(1, 408403760), (2, 204201880), (4, 102100940), (5, 81680752), (8, 51050470), (10, 40840376), (16, 25525235), (20, 20420188), (40, 10210094), (80, 5105047)]