21740641

素因数分解:

${\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{739}}^1$

素因数の和:856

約数の個数: 16

約数和(自身を含む): 24532480

約数和(自身を除く): 2791839

約数列:

[1, 13, 31, 73, 403, 739, 949, 2263, 9607, 22909, 29419, 53947, 297817, 701311, 1672357, 21740641]

約数ペア:

[(1, 21740641), (13, 1672357), (31, 701311), (73, 297817), (403, 53947), (739, 29419), (949, 22909), (2263, 9607)]