51357369

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{157}}^1\times {\mathrm{421}}^1$

素因数の和:625

約数の個数: 32

約数和(自身を含む): 81078016

約数和(自身を除く): 29720647

約数列:

[1, 3, 7, 21, 37, 111, 157, 259, 421, 471, 777, 1099, 1263, 2947, 3297, 5809, 8841, 15577, 17427, 40663, 46731, 66097, 109039, 121989, 198291, 327117, 462679, 1388037, 2445589, 7336767, 17119123, 51357369]

約数ペア:

[(1, 51357369), (3, 17119123), (7, 7336767), (21, 2445589), (37, 1388037), (111, 462679), (157, 327117), (259, 198291), (421, 121989), (471, 109039), (777, 66097), (1099, 46731), (1263, 40663), (2947, 17427), (3297, 15577), (5809, 8841)]