20872489

素因数分解:

${\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{1109}}^1$

素因数の和:1208

約数の個数: 16

約数和(自身を含む): 23976000

約数和(自身を除く): 3103511

約数列:

[1, 11, 29, 59, 319, 649, 1109, 1711, 12199, 18821, 32161, 65431, 353771, 719741, 1897499, 20872489]

約数ペア:

[(1, 20872489), (11, 1897499), (29, 719741), (59, 353771), (319, 65431), (649, 32161), (1109, 18821), (1711, 12199)]