72788780

素因数分解:

$2^2\times 5^1\times {\mathrm{127}}^1\times {\mathrm{28657}}^1$

素因数の和:28793

約数の個数: 24

約数和(自身を含む): 154065408

約数和(自身を除く): 81276628

約数列:

[1, 2, 4, 5, 10, 20, 127, 254, 508, 635, 1270, 2540, 28657, 57314, 114628, 143285, 286570, 573140, 3639439, 7278878, 14557756, 18197195, 36394390, 72788780]

約数ペア:

[(1, 72788780), (2, 36394390), (4, 18197195), (5, 14557756), (10, 7278878), (20, 3639439), (127, 573140), (254, 286570), (508, 143285), (635, 114628), (1270, 57314), (2540, 28657)]