261489160

素因数分解:

$2^3\times 5^1\times {\mathrm{137}}^1\times {\mathrm{47717}}^1$

素因数の和:47865

約数の個数: 32

約数和(自身を含む): 592657560

約数和(自身を除く): 331168400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 137, 274, 548, 685, 1096, 1370, 2740, 5480, 47717, 95434, 190868, 238585, 381736, 477170, 954340, 1908680, 6537229, 13074458, 26148916, 32686145, 52297832, 65372290, 130744580, 261489160]

約数ペア:

[(1, 261489160), (2, 130744580), (4, 65372290), (5, 52297832), (8, 32686145), (10, 26148916), (20, 13074458), (40, 6537229), (137, 1908680), (274, 954340), (548, 477170), (685, 381736), (1096, 238585), (1370, 190868), (2740, 95434), (5480, 47717)]