20808217745

素因数分解:

$5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{691}}^1\times {\mathrm{6469}}^1$

素因数の和:7198

約数の個数: 48

約数和(自身を含む): 30624321600

約数和(自身を除く): 9816103855

約数列:

[1, 5, 7, 19, 35, 49, 95, 133, 245, 665, 691, 931, 3455, 4655, 4837, 6469, 13129, 24185, 32345, 33859, 45283, 65645, 91903, 122911, 169295, 226415, 316981, 459515, 614555, 643321, 860377, 1584905, 3216605, 4301885, 4470079, 6022639, 22350395, 30113195, 31290553, 84931501, 156452765, 219033871, 424657505, 594520507, 1095169355, 2972602535, 4161643549, 20808217745]

約数ペア:

[(1, 20808217745), (5, 4161643549), (7, 2972602535), (19, 1095169355), (35, 594520507), (49, 424657505), (95, 219033871), (133, 156452765), (245, 84931501), (665, 31290553), (691, 30113195), (931, 22350395), (3455, 6022639), (4655, 4470079), (4837, 4301885), (6469, 3216605), (13129, 1584905), (24185, 860377), (32345, 643321), (33859, 614555), (45283, 459515), (65645, 316981), (91903, 226415), (122911, 169295)]