20988666

素因数分解:

$2^1\times 3^3\times {\mathrm{97}}^1\times {\mathrm{4007}}^1$

素因数の和:4115

約数の個数: 32

約数和(自身を含む): 47134080

約数和(自身を除く): 26145414

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 97, 194, 291, 582, 873, 1746, 2619, 4007, 5238, 8014, 12021, 24042, 36063, 72126, 108189, 216378, 388679, 777358, 1166037, 2332074, 3498111, 6996222, 10494333, 20988666]

約数ペア:

[(1, 20988666), (2, 10494333), (3, 6996222), (6, 3498111), (9, 2332074), (18, 1166037), (27, 777358), (54, 388679), (97, 216378), (194, 108189), (291, 72126), (582, 36063), (873, 24042), (1746, 12021), (2619, 8014), (4007, 5238)]