20942215

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{577}}^1$

素因数の和:667

約数の個数: 32

約数和(自身を含む): 30962304

約数和(自身を除く): 10020089

約数列:

[1, 5, 7, 17, 35, 61, 85, 119, 305, 427, 577, 595, 1037, 2135, 2885, 4039, 5185, 7259, 9809, 20195, 35197, 36295, 49045, 68663, 175985, 246379, 343315, 598349, 1231895, 2991745, 4188443, 20942215]

約数ペア:

[(1, 20942215), (5, 4188443), (7, 2991745), (17, 1231895), (35, 598349), (61, 343315), (85, 246379), (119, 175985), (305, 68663), (427, 49045), (577, 36295), (595, 35197), (1037, 20195), (2135, 9809), (2885, 7259), (4039, 5185)]