20597780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{167}}^1\times {\mathrm{881}}^1$

素因数の和:1064

約数の個数: 48

約数和(自身を含む): 49787136

約数和(自身を除く): 29189356

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 167, 334, 668, 835, 881, 1169, 1670, 1762, 2338, 3340, 3524, 4405, 4676, 5845, 6167, 8810, 11690, 12334, 17620, 23380, 24668, 30835, 61670, 123340, 147127, 294254, 588508, 735635, 1029889, 1471270, 2059778, 2942540, 4119556, 5149445, 10298890, 20597780]

約数ペア:

[(1, 20597780), (2, 10298890), (4, 5149445), (5, 4119556), (7, 2942540), (10, 2059778), (14, 1471270), (20, 1029889), (28, 735635), (35, 588508), (70, 294254), (140, 147127), (167, 123340), (334, 61670), (668, 30835), (835, 24668), (881, 23380), (1169, 17620), (1670, 12334), (1762, 11690), (2338, 8810), (3340, 6167), (3524, 5845), (4405, 4676)]