20551825

素因数分解:

$5^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{883}}^1$

素因数の和:926

約数の個数: 36

約数和(自身を含む): 31240560

約数和(自身を除く): 10688735

約数列:

[1, 5, 7, 19, 25, 35, 49, 95, 133, 175, 245, 475, 665, 883, 931, 1225, 3325, 4415, 4655, 6181, 16777, 22075, 23275, 30905, 43267, 83885, 117439, 154525, 216335, 419425, 587195, 822073, 1081675, 2935975, 4110365, 20551825]

約数ペア:

[(1, 20551825), (5, 4110365), (7, 2935975), (19, 1081675), (25, 822073), (35, 587195), (49, 419425), (95, 216335), (133, 154525), (175, 117439), (245, 83885), (475, 43267), (665, 30905), (883, 23275), (931, 22075), (1225, 16777), (3325, 6181), (4415, 4655)]