20175428

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1289}}^1$

素因数の和:1356

約数の個数: 48

約数和(自身を含む): 44499840

約数和(自身を除く): 24324412

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 43, 52, 86, 91, 172, 182, 301, 364, 559, 602, 1118, 1204, 1289, 2236, 2578, 3913, 5156, 7826, 9023, 15652, 16757, 18046, 33514, 36092, 55427, 67028, 110854, 117299, 221708, 234598, 387989, 469196, 720551, 775978, 1441102, 1551956, 2882204, 5043857, 10087714, 20175428]

約数ペア:

[(1, 20175428), (2, 10087714), (4, 5043857), (7, 2882204), (13, 1551956), (14, 1441102), (26, 775978), (28, 720551), (43, 469196), (52, 387989), (86, 234598), (91, 221708), (172, 117299), (182, 110854), (301, 67028), (364, 55427), (559, 36092), (602, 33514), (1118, 18046), (1204, 16757), (1289, 15652), (2236, 9023), (2578, 7826), (3913, 5156)]