21103901

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{7481}}^1$

素因数の和:7532

約数の個数: 16

約数和(自身を含む): 26815488

約数和(自身を除く): 5711587

約数列:

[1, 7, 13, 31, 91, 217, 403, 2821, 7481, 52367, 97253, 231911, 680771, 1623377, 3014843, 21103901]

約数ペア:

[(1, 21103901), (7, 3014843), (13, 1623377), (31, 680771), (91, 231911), (217, 97253), (403, 52367), (2821, 7481)]