21023811

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{109}}^1\times {\mathrm{739}}^1$

素因数の和:883

約数の個数: 24

約数和(自身を含む): 31746000

約数和(自身を除く): 10722189

約数列:

[1, 3, 9, 29, 87, 109, 261, 327, 739, 981, 2217, 3161, 6651, 9483, 21431, 28449, 64293, 80551, 192879, 241653, 724959, 2335979, 7007937, 21023811]

約数ペア:

[(1, 21023811), (3, 7007937), (9, 2335979), (29, 724959), (87, 241653), (109, 192879), (261, 80551), (327, 64293), (739, 28449), (981, 21431), (2217, 9483), (3161, 6651)]