318968560

素因数分解:

$2^4\times 5^1\times {\mathrm{3987107}}^1$

素因数の和:3987120

約数の個数: 20

約数和(自身を含む): 741602088

約数和(自身を除く): 422633528

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3987107, 7974214, 15948428, 19935535, 31896856, 39871070, 63793712, 79742140, 159484280, 318968560]

約数ペア:

[(1, 318968560), (2, 159484280), (4, 79742140), (5, 63793712), (8, 39871070), (10, 31896856), (16, 19935535), (20, 15948428), (40, 7974214), (80, 3987107)]