20911438

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{107}}^1\times {\mathrm{139}}^1$

素因数の和:304

約数の個数: 32

約数和(自身を含む): 34473600

約数和(自身を除く): 13562162

約数列:

[1, 2, 19, 37, 38, 74, 107, 139, 214, 278, 703, 1406, 2033, 2641, 3959, 4066, 5143, 5282, 7918, 10286, 14873, 29746, 75221, 97717, 150442, 195434, 282587, 550301, 565174, 1100602, 10455719, 20911438]

約数ペア:

[(1, 20911438), (2, 10455719), (19, 1100602), (37, 565174), (38, 550301), (74, 282587), (107, 195434), (139, 150442), (214, 97717), (278, 75221), (703, 29746), (1406, 14873), (2033, 10286), (2641, 7918), (3959, 5282), (4066, 5143)]