13221981

素因数分解:

$3^3\times {\mathrm{67}}^1\times {\mathrm{7309}}^1$

素因数の和:7385

約数の個数: 16

約数和(自身を含む): 19883200

約数和(自身を除く): 6661219

約数列:

[1, 3, 9, 27, 67, 201, 603, 1809, 7309, 21927, 65781, 197343, 489703, 1469109, 4407327, 13221981]

約数ペア:

[(1, 13221981), (3, 4407327), (9, 1469109), (27, 489703), (67, 197343), (201, 65781), (603, 21927), (1809, 7309)]