215681680

素因数分解:

$2^4\times 5^1\times {\mathrm{2696021}}^1$

素因数の和:2696034

約数の個数: 20

約数和(自身を含む): 501460092

約数和(自身を除く): 285778412

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2696021, 5392042, 10784084, 13480105, 21568168, 26960210, 43136336, 53920420, 107840840, 215681680]

約数ペア:

[(1, 215681680), (2, 107840840), (4, 53920420), (5, 43136336), (8, 26960210), (10, 21568168), (16, 13480105), (20, 10784084), (40, 5392042), (80, 2696021)]