139902721

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{28031}}^1$

素因数の和:28092

約数の個数: 16

約数和(自身を含む): 172228608

約数和(自身を除く): 32325887

約数列:

[1, 7, 23, 31, 161, 217, 713, 4991, 28031, 196217, 644713, 868961, 4512991, 6082727, 19986103, 139902721]

約数ペア:

[(1, 139902721), (7, 19986103), (23, 6082727), (31, 4512991), (161, 868961), (217, 644713), (713, 196217), (4991, 28031)]