20149587

素因数分解:

$3^3\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{457}}^1$

素因数の和:560

約数の個数: 32

約数和(自身を含む): 31656960

約数和(自身を除く): 11507373

約数列:

[1, 3, 9, 23, 27, 69, 71, 207, 213, 457, 621, 639, 1371, 1633, 1917, 4113, 4899, 10511, 12339, 14697, 31533, 32447, 44091, 94599, 97341, 283797, 292023, 746281, 876069, 2238843, 6716529, 20149587]

約数ペア:

[(1, 20149587), (3, 6716529), (9, 2238843), (23, 876069), (27, 746281), (69, 292023), (71, 283797), (207, 97341), (213, 94599), (457, 44091), (621, 32447), (639, 31533), (1371, 14697), (1633, 12339), (1917, 10511), (4113, 4899)]