21887411

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{12659}}^1$

素因数の和:12698

約数の個数: 16

約数和(自身を含む): 28358400

約数和(自身を除く): 6470989

約数列:

[1, 7, 13, 19, 91, 133, 247, 1729, 12659, 88613, 164567, 240521, 1151969, 1683647, 3126773, 21887411]

約数ペア:

[(1, 21887411), (7, 3126773), (13, 1683647), (19, 1151969), (91, 240521), (133, 164567), (247, 88613), (1729, 12659)]