20290760

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{72467}}^1$

素因数の和:72485

約数の個数: 32

約数和(自身を含む): 52176960

約数和(自身を除く): 31886200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 72467, 144934, 289868, 362335, 507269, 579736, 724670, 1014538, 1449340, 2029076, 2536345, 2898680, 4058152, 5072690, 10145380, 20290760]

約数ペア:

[(1, 20290760), (2, 10145380), (4, 5072690), (5, 4058152), (7, 2898680), (8, 2536345), (10, 2029076), (14, 1449340), (20, 1014538), (28, 724670), (35, 579736), (40, 507269), (56, 362335), (70, 289868), (140, 144934), (280, 72467)]