21120039

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{113}}^1\times {\mathrm{1093}}^1$

素因数の和:1231

約数の個数: 24

約数和(自身を含む): 32426160

約数和(自身を除く): 11306121

約数列:

[1, 3, 9, 19, 57, 113, 171, 339, 1017, 1093, 2147, 3279, 6441, 9837, 19323, 20767, 62301, 123509, 186903, 370527, 1111581, 2346671, 7040013, 21120039]

約数ペア:

[(1, 21120039), (3, 7040013), (9, 2346671), (19, 1111581), (57, 370527), (113, 186903), (171, 123509), (339, 62301), (1017, 20767), (1093, 19323), (2147, 9837), (3279, 6441)]