21520242

素因数分解:

$2^1\times 3^4\times {\mathrm{71}}^1\times {\mathrm{1871}}^1$

素因数の和:1956

約数の個数: 40

約数和(自身を含む): 48926592

約数和(自身を除く): 27406350

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 71, 81, 142, 162, 213, 426, 639, 1278, 1871, 1917, 3742, 3834, 5613, 5751, 11226, 11502, 16839, 33678, 50517, 101034, 132841, 151551, 265682, 303102, 398523, 797046, 1195569, 2391138, 3586707, 7173414, 10760121, 21520242]

約数ペア:

[(1, 21520242), (2, 10760121), (3, 7173414), (6, 3586707), (9, 2391138), (18, 1195569), (27, 797046), (54, 398523), (71, 303102), (81, 265682), (142, 151551), (162, 132841), (213, 101034), (426, 50517), (639, 33678), (1278, 16839), (1871, 11502), (1917, 11226), (3742, 5751), (3834, 5613)]