16564820

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{20201}}^1$

素因数の和:20251

約数の個数: 24

約数和(自身を含む): 35636328

約数和(自身を除く): 19071508

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 20201, 40402, 80804, 101005, 202010, 404020, 828241, 1656482, 3312964, 4141205, 8282410, 16564820]

約数ペア:

[(1, 16564820), (2, 8282410), (4, 4141205), (5, 3312964), (10, 1656482), (20, 828241), (41, 404020), (82, 202010), (164, 101005), (205, 80804), (410, 40402), (820, 20201)]