21147973

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{269}}^1\times {\mathrm{1021}}^1$

素因数の和:1308

約数の個数: 16

約数和(自身を含む): 26490240

約数和(自身を除く): 5342267

約数列:

[1, 7, 11, 77, 269, 1021, 1883, 2959, 7147, 11231, 20713, 78617, 274649, 1922543, 3021139, 21147973]

約数ペア:

[(1, 21147973), (7, 3021139), (11, 1922543), (77, 274649), (269, 78617), (1021, 20713), (1883, 11231), (2959, 7147)]