83989940

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{199}}^1\times {\mathrm{449}}^1$

素因数の和:704

約数の個数: 48

約数和(自身を含む): 181440000

約数和(自身を除く): 97450060

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 199, 235, 398, 449, 470, 796, 898, 940, 995, 1796, 1990, 2245, 3980, 4490, 8980, 9353, 18706, 21103, 37412, 42206, 46765, 84412, 89351, 93530, 105515, 178702, 187060, 211030, 357404, 422060, 446755, 893510, 1787020, 4199497, 8398994, 16797988, 20997485, 41994970, 83989940]

約数ペア:

[(1, 83989940), (2, 41994970), (4, 20997485), (5, 16797988), (10, 8398994), (20, 4199497), (47, 1787020), (94, 893510), (188, 446755), (199, 422060), (235, 357404), (398, 211030), (449, 187060), (470, 178702), (796, 105515), (898, 93530), (940, 89351), (995, 84412), (1796, 46765), (1990, 42206), (2245, 37412), (3980, 21103), (4490, 18706), (8980, 9353)]