20826680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{74381}}^1$

素因数の和:74399

約数の個数: 32

約数和(自身を含む): 53555040

約数和(自身を除く): 32728360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 74381, 148762, 297524, 371905, 520667, 595048, 743810, 1041334, 1487620, 2082668, 2603335, 2975240, 4165336, 5206670, 10413340, 20826680]

約数ペア:

[(1, 20826680), (2, 10413340), (4, 5206670), (5, 4165336), (7, 2975240), (8, 2603335), (10, 2082668), (14, 1487620), (20, 1041334), (28, 743810), (35, 595048), (40, 520667), (56, 371905), (70, 297524), (140, 148762), (280, 74381)]