21767859

素因数分解:

$3^4\times {\mathrm{31}}^1\times {\mathrm{8669}}^1$

素因数の和:8712

約数の個数: 20

約数和(自身を含む): 33570240

約数和(自身を除く): 11802381

約数列:

[1, 3, 9, 27, 31, 81, 93, 279, 837, 2511, 8669, 26007, 78021, 234063, 268739, 702189, 806217, 2418651, 7255953, 21767859]

約数ペア:

[(1, 21767859), (3, 7255953), (9, 2418651), (27, 806217), (31, 702189), (81, 268739), (93, 234063), (279, 78021), (837, 26007), (2511, 8669)]