18809900

素因数分解:

$2^2\times 5^2\times {\mathrm{79}}^1\times {\mathrm{2381}}^1$

素因数の和:2474

約数の個数: 36

約数和(自身を含む): 41351520

約数和(自身を除く): 22541620

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 79, 100, 158, 316, 395, 790, 1580, 1975, 2381, 3950, 4762, 7900, 9524, 11905, 23810, 47620, 59525, 119050, 188099, 238100, 376198, 752396, 940495, 1880990, 3761980, 4702475, 9404950, 18809900]

約数ペア:

[(1, 18809900), (2, 9404950), (4, 4702475), (5, 3761980), (10, 1880990), (20, 940495), (25, 752396), (50, 376198), (79, 238100), (100, 188099), (158, 119050), (316, 59525), (395, 47620), (790, 23810), (1580, 11905), (1975, 9524), (2381, 7900), (3950, 4762)]