221497689

素因数分解:

$3^1\times 7^2\times {\mathrm{103}}^1\times {\mathrm{14629}}^1$

素因数の和:14749

約数の個数: 24

約数和(自身を含む): 346906560

約数和(自身を除く): 125408871

約数列:

[1, 3, 7, 21, 49, 103, 147, 309, 721, 2163, 5047, 14629, 15141, 43887, 102403, 307209, 716821, 1506787, 2150463, 4520361, 10547509, 31642527, 73832563, 221497689]

約数ペア:

[(1, 221497689), (3, 73832563), (7, 31642527), (21, 10547509), (49, 4520361), (103, 2150463), (147, 1506787), (309, 716821), (721, 307209), (2163, 102403), (5047, 43887), (14629, 15141)]