79897880

素因数分解:

$2^3\times 5^1\times {\mathrm{277}}^1\times {\mathrm{7211}}^1$

素因数の和:7499

約数の個数: 32

約数和(自身を含む): 180444240

約数和(自身を除く): 100546360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 277, 554, 1108, 1385, 2216, 2770, 5540, 7211, 11080, 14422, 28844, 36055, 57688, 72110, 144220, 288440, 1997447, 3994894, 7989788, 9987235, 15979576, 19974470, 39948940, 79897880]

約数ペア:

[(1, 79897880), (2, 39948940), (4, 19974470), (5, 15979576), (8, 9987235), (10, 7989788), (20, 3994894), (40, 1997447), (277, 288440), (554, 144220), (1108, 72110), (1385, 57688), (2216, 36055), (2770, 28844), (5540, 14422), (7211, 11080)]