18758780

素因数分解:

$2^2\times 5^1\times {\mathrm{401}}^1\times {\mathrm{2339}}^1$

素因数の和:2749

約数の個数: 24

約数和(自身を含む): 39508560

約数和(自身を除く): 20749780

約数列:

[1, 2, 4, 5, 10, 20, 401, 802, 1604, 2005, 2339, 4010, 4678, 8020, 9356, 11695, 23390, 46780, 937939, 1875878, 3751756, 4689695, 9379390, 18758780]

約数ペア:

[(1, 18758780), (2, 9379390), (4, 4689695), (5, 3751756), (10, 1875878), (20, 937939), (401, 46780), (802, 23390), (1604, 11695), (2005, 9356), (2339, 8020), (4010, 4678)]