51747215

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{421}}^1$

素因数の和:531

約数の個数: 32

約数和(自身を含む): 70328832

約数和(自身を除く): 18581617

約数列:

[1, 5, 13, 31, 61, 65, 155, 305, 403, 421, 793, 1891, 2015, 2105, 3965, 5473, 9455, 13051, 24583, 25681, 27365, 65255, 122915, 128405, 169663, 333853, 796111, 848315, 1669265, 3980555, 10349443, 51747215]

約数ペア:

[(1, 51747215), (5, 10349443), (13, 3980555), (31, 1669265), (61, 848315), (65, 796111), (155, 333853), (305, 169663), (403, 128405), (421, 122915), (793, 65255), (1891, 27365), (2015, 25681), (2105, 24583), (3965, 13051), (5473, 9455)]