19942551

素因数分解:

$3^3\times {\mathrm{71}}^1\times {\mathrm{101}}^1\times {\mathrm{103}}^1$

素因数の和:284

約数の個数: 32

約数和(自身を含む): 30551040

約数和(自身を除く): 10608489

約数列:

[1, 3, 9, 27, 71, 101, 103, 213, 303, 309, 639, 909, 927, 1917, 2727, 2781, 7171, 7313, 10403, 21513, 21939, 31209, 64539, 65817, 93627, 193617, 197451, 280881, 738613, 2215839, 6647517, 19942551]

約数ペア:

[(1, 19942551), (3, 6647517), (9, 2215839), (27, 738613), (71, 280881), (101, 197451), (103, 193617), (213, 93627), (303, 65817), (309, 64539), (639, 31209), (909, 21939), (927, 21513), (1917, 10403), (2727, 7313), (2781, 7171)]