21109907

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{229}}^1\times {\mathrm{1013}}^1$

素因数の和:1262

約数の個数: 16

約数和(自身を含む): 26120640

約数和(自身を除く): 5010733

約数列:

[1, 7, 13, 91, 229, 1013, 1603, 2977, 7091, 13169, 20839, 92183, 231977, 1623839, 3015701, 21109907]

約数ペア:

[(1, 21109907), (7, 3015701), (13, 1623839), (91, 231977), (229, 92183), (1013, 20839), (1603, 13169), (2977, 7091)]