20591451

素因数分解:

$3^2\times {\mathrm{97}}^1\times {\mathrm{103}}^1\times {\mathrm{229}}^1$

素因数の和:435

約数の個数: 24

約数和(自身を含む): 30474080

約数和(自身を除く): 9882629

約数列:

[1, 3, 9, 97, 103, 229, 291, 309, 687, 873, 927, 2061, 9991, 22213, 23587, 29973, 66639, 70761, 89919, 199917, 212283, 2287939, 6863817, 20591451]

約数ペア:

[(1, 20591451), (3, 6863817), (9, 2287939), (97, 212283), (103, 199917), (229, 89919), (291, 70761), (309, 66639), (687, 29973), (873, 23587), (927, 22213), (2061, 9991)]