20258203

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{107}}^1$

素因数の和:211

約数の個数: 32

約数和(自身を含む): 26002944

約数和(自身を除く): 5744741

約数列:

[1, 7, 17, 37, 43, 107, 119, 259, 301, 629, 731, 749, 1591, 1819, 3959, 4403, 4601, 5117, 11137, 12733, 27047, 27713, 32207, 67303, 78217, 170237, 189329, 471121, 547519, 1191659, 2894029, 20258203]

約数ペア:

[(1, 20258203), (7, 2894029), (17, 1191659), (37, 547519), (43, 471121), (107, 189329), (119, 170237), (259, 78217), (301, 67303), (629, 32207), (731, 27713), (749, 27047), (1591, 12733), (1819, 11137), (3959, 5117), (4403, 4601)]