61689640

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{14149}}^1$

素因数の和:14269

約数の個数: 32

約数和(自身を含む): 140085000

約数和(自身を除く): 78395360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 14149, 28298, 56596, 70745, 113192, 141490, 282980, 565960, 1542241, 3084482, 6168964, 7711205, 12337928, 15422410, 30844820, 61689640]

約数ペア:

[(1, 61689640), (2, 30844820), (4, 15422410), (5, 12337928), (8, 7711205), (10, 6168964), (20, 3084482), (40, 1542241), (109, 565960), (218, 282980), (436, 141490), (545, 113192), (872, 70745), (1090, 56596), (2180, 28298), (4360, 14149)]