15400021

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{229}}^1\times {\mathrm{739}}^1$

素因数の和:988

約数の個数: 16

約数和(自身を含む): 19062400

約数和(自身を除く): 3662379

約数列:

[1, 7, 13, 91, 229, 739, 1603, 2977, 5173, 9607, 20839, 67249, 169231, 1184617, 2200003, 15400021]

約数ペア:

[(1, 15400021), (7, 2200003), (13, 1184617), (91, 169231), (229, 67249), (739, 20839), (1603, 9607), (2977, 5173)]