201605980

素因数分解:

$2^2\times 5^1\times {\mathrm{499}}^1\times {\mathrm{20201}}^1$

素因数の和:20709

約数の個数: 24

約数和(自身を含む): 424242000

約数和(自身を除く): 222636020

約数列:

[1, 2, 4, 5, 10, 20, 499, 998, 1996, 2495, 4990, 9980, 20201, 40402, 80804, 101005, 202010, 404020, 10080299, 20160598, 40321196, 50401495, 100802990, 201605980]

約数ペア:

[(1, 201605980), (2, 100802990), (4, 50401495), (5, 40321196), (10, 20160598), (20, 10080299), (499, 404020), (998, 202010), (1996, 101005), (2495, 80804), (4990, 40402), (9980, 20201)]