21199939

素因数分解:

${\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{67}}^1\times {\mathrm{173}}^1$

素因数の和:330

約数の個数: 16

約数和(自身を含む): 22717440

約数和(自身を除く): 1517501

約数列:

[1, 31, 59, 67, 173, 1829, 2077, 3953, 5363, 10207, 11591, 122543, 316417, 359321, 683869, 21199939]

約数ペア:

[(1, 21199939), (31, 683869), (59, 359321), (67, 316417), (173, 122543), (1829, 11591), (2077, 10207), (3953, 5363)]