20575345

素因数分解:

$5^1\times 7^2\times {\mathrm{137}}^1\times {\mathrm{613}}^1$

素因数の和:769

約数の個数: 24

約数和(自身を含む): 28978344

約数和(自身を除く): 8402999

約数列:

[1, 5, 7, 35, 49, 137, 245, 613, 685, 959, 3065, 4291, 4795, 6713, 21455, 30037, 33565, 83981, 150185, 419905, 587867, 2939335, 4115069, 20575345]

約数ペア:

[(1, 20575345), (5, 4115069), (7, 2939335), (35, 587867), (49, 419905), (137, 150185), (245, 83981), (613, 33565), (685, 30037), (959, 21455), (3065, 6713), (4291, 4795)]