81033640

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{43103}}^1$

素因数の和:43161

約数の個数: 32

約数和(自身を含む): 186209280

約数和(自身を除く): 105175640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 376, 470, 940, 1880, 43103, 86206, 172412, 215515, 344824, 431030, 862060, 1724120, 2025841, 4051682, 8103364, 10129205, 16206728, 20258410, 40516820, 81033640]

約数ペア:

[(1, 81033640), (2, 40516820), (4, 20258410), (5, 16206728), (8, 10129205), (10, 8103364), (20, 4051682), (40, 2025841), (47, 1724120), (94, 862060), (188, 431030), (235, 344824), (376, 215515), (470, 172412), (940, 86206), (1880, 43103)]