80138980

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{36761}}^1$

素因数の和:36879

約数の個数: 24

約数和(自身を含む): 169840440

約数和(自身を除く): 89701460

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 36761, 73522, 147044, 183805, 367610, 735220, 4006949, 8013898, 16027796, 20034745, 40069490, 80138980]

約数ペア:

[(1, 80138980), (2, 40069490), (4, 20034745), (5, 16027796), (10, 8013898), (20, 4006949), (109, 735220), (218, 367610), (436, 183805), (545, 147044), (1090, 73522), (2180, 36761)]