18977260

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{23143}}^1$

素因数の和:23193

約数の個数: 24

約数和(自身を含む): 40826016

約数和(自身を除く): 21848756

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 23143, 46286, 92572, 115715, 231430, 462860, 948863, 1897726, 3795452, 4744315, 9488630, 18977260]

約数ペア:

[(1, 18977260), (2, 9488630), (4, 4744315), (5, 3795452), (10, 1897726), (20, 948863), (41, 462860), (82, 231430), (164, 115715), (205, 92572), (410, 46286), (820, 23143)]