20830275

素因数分解:

$3^2\times 5^2\times {\mathrm{43}}^1\times {\mathrm{2153}}^1$

素因数の和:2212

約数の個数: 36

約数和(自身を含む): 38194728

約数和(自身を除く): 17364453

約数列:

[1, 3, 5, 9, 15, 25, 43, 45, 75, 129, 215, 225, 387, 645, 1075, 1935, 2153, 3225, 6459, 9675, 10765, 19377, 32295, 53825, 92579, 96885, 161475, 277737, 462895, 484425, 833211, 1388685, 2314475, 4166055, 6943425, 20830275]

約数ペア:

[(1, 20830275), (3, 6943425), (5, 4166055), (9, 2314475), (15, 1388685), (25, 833211), (43, 484425), (45, 462895), (75, 277737), (129, 161475), (215, 96885), (225, 92579), (387, 53825), (645, 32295), (1075, 19377), (1935, 10765), (2153, 9675), (3225, 6459)]