20080529

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1$

素因数の和:177

約数の個数: 32

約数和(自身を含む): 25331712

約数和(自身を除く): 5251183

約数列:

[1, 7, 31, 37, 41, 61, 217, 259, 287, 427, 1147, 1271, 1517, 1891, 2257, 2501, 8029, 8897, 10619, 13237, 15799, 17507, 47027, 69967, 77531, 92537, 329189, 489769, 542717, 647759, 2868647, 20080529]

約数ペア:

[(1, 20080529), (7, 2868647), (31, 647759), (37, 542717), (41, 489769), (61, 329189), (217, 92537), (259, 77531), (287, 69967), (427, 47027), (1147, 17507), (1271, 15799), (1517, 13237), (1891, 10619), (2257, 8897), (2501, 8029)]