20419785

素因数分解:

$3^2\times 5^1\times {\mathrm{227}}^1\times {\mathrm{1999}}^1$

素因数の和:2237

約数の個数: 24

約数和(自身を含む): 35568000

約数和(自身を除く): 15148215

約数列:

[1, 3, 5, 9, 15, 45, 227, 681, 1135, 1999, 2043, 3405, 5997, 9995, 10215, 17991, 29985, 89955, 453773, 1361319, 2268865, 4083957, 6806595, 20419785]

約数ペア:

[(1, 20419785), (3, 6806595), (5, 4083957), (9, 2268865), (15, 1361319), (45, 453773), (227, 89955), (681, 29985), (1135, 17991), (1999, 10215), (2043, 9995), (3405, 5997)]