399080

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{907}}^1$

素因数の和:929

約数の個数: 32

約数和(自身を含む): 980640

約数和(自身を除く): 581560

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 907, 1814, 3628, 4535, 7256, 9070, 9977, 18140, 19954, 36280, 39908, 49885, 79816, 99770, 199540, 399080]

約数ペア:

[(1, 399080), (2, 199540), (4, 99770), (5, 79816), (8, 49885), (10, 39908), (11, 36280), (20, 19954), (22, 18140), (40, 9977), (44, 9070), (55, 7256), (88, 4535), (110, 3628), (220, 1814), (440, 907)]