21111713

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{271}}^1\times {\mathrm{359}}^1$

素因数の和:668

約数の個数: 16

約数和(自身を含む): 25067520

約数和(自身を除く): 3955807

約数列:

[1, 7, 31, 217, 271, 359, 1897, 2513, 8401, 11129, 58807, 77903, 97289, 681023, 3015959, 21111713]

約数ペア:

[(1, 21111713), (7, 3015959), (31, 681023), (217, 97289), (271, 77903), (359, 58807), (1897, 11129), (2513, 8401)]