2720991

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{9967}}^1$

素因数の和:9990

約数の個数: 16

約数和(自身を含む): 4465664

約数和(自身を除く): 1744673

約数列:

[1, 3, 7, 13, 21, 39, 91, 273, 9967, 29901, 69769, 129571, 209307, 388713, 906997, 2720991]

約数ペア:

[(1, 2720991), (3, 906997), (7, 388713), (13, 209307), (21, 129571), (39, 69769), (91, 29901), (273, 9967)]