78923980

素因数分解:

$2^2\times 5^1\times {\mathrm{1009}}^1\times {\mathrm{3911}}^1$

素因数の和:4929

約数の個数: 24

約数和(自身を含む): 165947040

約数和(自身を除く): 87023060

約数列:

[1, 2, 4, 5, 10, 20, 1009, 2018, 3911, 4036, 5045, 7822, 10090, 15644, 19555, 20180, 39110, 78220, 3946199, 7892398, 15784796, 19730995, 39461990, 78923980]

約数ペア:

[(1, 78923980), (2, 39461990), (4, 19730995), (5, 15784796), (10, 7892398), (20, 3946199), (1009, 78220), (2018, 39110), (3911, 20180), (4036, 19555), (5045, 15644), (7822, 10090)]