18508717460

素因数分解:

$2^2\times 5^1\times {\mathrm{431}}^1\times {\mathrm{487}}^1\times {\mathrm{4409}}^1$

素因数の和:5336

約数の個数: 48

約数和(自身を含む): 39047339520

約数和(自身を除く): 20538622060

約数列:

[1, 2, 4, 5, 10, 20, 431, 487, 862, 974, 1724, 1948, 2155, 2435, 4310, 4409, 4870, 8620, 8818, 9740, 17636, 22045, 44090, 88180, 209897, 419794, 839588, 1049485, 1900279, 2098970, 2147183, 3800558, 4197940, 4294366, 7601116, 8588732, 9501395, 10735915, 19002790, 21471830, 38005580, 42943660, 925435873, 1850871746, 3701743492, 4627179365, 9254358730, 18508717460]

約数ペア:

[(1, 18508717460), (2, 9254358730), (4, 4627179365), (5, 3701743492), (10, 1850871746), (20, 925435873), (431, 42943660), (487, 38005580), (862, 21471830), (974, 19002790), (1724, 10735915), (1948, 9501395), (2155, 8588732), (2435, 7601116), (4310, 4294366), (4409, 4197940), (4870, 3800558), (8620, 2147183), (8818, 2098970), (9740, 1900279), (17636, 1049485), (22045, 839588), (44090, 419794), (88180, 209897)]