21828123

素因数分解:

$3^4\times {\mathrm{31}}^1\times {\mathrm{8693}}^1$

素因数の和:8736

約数の個数: 20

約数和(自身を含む): 33663168

約数和(自身を除く): 11835045

約数列:

[1, 3, 9, 27, 31, 81, 93, 279, 837, 2511, 8693, 26079, 78237, 234711, 269483, 704133, 808449, 2425347, 7276041, 21828123]

約数ペア:

[(1, 21828123), (3, 7276041), (9, 2425347), (27, 808449), (31, 704133), (81, 269483), (93, 234711), (279, 78237), (837, 26079), (2511, 8693)]