81875960

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{66029}}^1$

素因数の和:66071

約数の個数: 32

約数和(自身を含む): 190166400

約数和(自身を除く): 108290440

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 66029, 132058, 264116, 330145, 528232, 660290, 1320580, 2046899, 2641160, 4093798, 8187596, 10234495, 16375192, 20468990, 40937980, 81875960]

約数ペア:

[(1, 81875960), (2, 40937980), (4, 20468990), (5, 16375192), (8, 10234495), (10, 8187596), (20, 4093798), (31, 2641160), (40, 2046899), (62, 1320580), (124, 660290), (155, 528232), (248, 330145), (310, 264116), (620, 132058), (1240, 66029)]