21048309

素因数分解:

$3^3\times {\mathrm{59}}^1\times {\mathrm{73}}^1\times {\mathrm{181}}^1$

素因数の和:322

約数の個数: 32

約数和(自身を含む): 32323200

約数和(自身を除く): 11274891

約数列:

[1, 3, 9, 27, 59, 73, 177, 181, 219, 531, 543, 657, 1593, 1629, 1971, 4307, 4887, 10679, 12921, 13213, 32037, 38763, 39639, 96111, 116289, 118917, 288333, 356751, 779567, 2338701, 7016103, 21048309]

約数ペア:

[(1, 21048309), (3, 7016103), (9, 2338701), (27, 779567), (59, 356751), (73, 288333), (177, 118917), (181, 116289), (219, 96111), (531, 39639), (543, 38763), (657, 32037), (1593, 13213), (1629, 12921), (1971, 10679), (4307, 4887)]