71163920

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{8161}}^1$

素因数の和:8283

約数の個数: 40

約数和(自身を含む): 166994520

約数和(自身を除く): 95830600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1744, 2180, 4360, 8161, 8720, 16322, 32644, 40805, 65288, 81610, 130576, 163220, 326440, 652880, 889549, 1779098, 3558196, 4447745, 7116392, 8895490, 14232784, 17790980, 35581960, 71163920]

約数ペア:

[(1, 71163920), (2, 35581960), (4, 17790980), (5, 14232784), (8, 8895490), (10, 7116392), (16, 4447745), (20, 3558196), (40, 1779098), (80, 889549), (109, 652880), (218, 326440), (436, 163220), (545, 130576), (872, 81610), (1090, 65288), (1744, 40805), (2180, 32644), (4360, 16322), (8161, 8720)]