20117851

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1$

素因数の和:175

約数の個数: 32

約数和(自身を含む): 24615360

約数和(自身を除く): 4497509

約数列:

[1, 13, 17, 29, 43, 73, 221, 377, 493, 559, 731, 949, 1241, 1247, 2117, 3139, 6409, 9503, 16133, 16211, 21199, 27521, 35989, 40807, 53363, 91031, 275587, 467857, 693719, 1183403, 1547527, 20117851]

約数ペア:

[(1, 20117851), (13, 1547527), (17, 1183403), (29, 693719), (43, 467857), (73, 275587), (221, 91031), (377, 53363), (493, 40807), (559, 35989), (731, 27521), (949, 21199), (1241, 16211), (1247, 16133), (2117, 9503), (3139, 6409)]