20255480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{72341}}^1$

素因数の和:72359

約数の個数: 32

約数和(自身を含む): 52086240

約数和(自身を除く): 31830760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 72341, 144682, 289364, 361705, 506387, 578728, 723410, 1012774, 1446820, 2025548, 2531935, 2893640, 4051096, 5063870, 10127740, 20255480]

約数ペア:

[(1, 20255480), (2, 10127740), (4, 5063870), (5, 4051096), (7, 2893640), (8, 2531935), (10, 2025548), (14, 1446820), (20, 1012774), (28, 723410), (35, 578728), (40, 506387), (56, 361705), (70, 289364), (140, 144682), (280, 72341)]