78272780

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{205981}}^1$

素因数の和:206009

約数の個数: 24

約数和(自身を含む): 173024880

約数和(自身を除く): 94752100

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 205981, 411962, 823924, 1029905, 2059810, 3913639, 4119620, 7827278, 15654556, 19568195, 39136390, 78272780]

約数ペア:

[(1, 78272780), (2, 39136390), (4, 19568195), (5, 15654556), (10, 7827278), (19, 4119620), (20, 3913639), (38, 2059810), (76, 1029905), (95, 823924), (190, 411962), (380, 205981)]