22720761

素因数分解:

$3^2\times 7^2\times {\mathrm{51521}}^1$

素因数の和:51541

約数の個数: 18

約数和(自身を含む): 38177802

約数和(自身を除く): 15457041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 51521, 154563, 360647, 463689, 1081941, 2524529, 3245823, 7573587, 22720761]

約数ペア:

[(1, 22720761), (3, 7573587), (7, 3245823), (9, 2524529), (21, 1081941), (49, 463689), (63, 360647), (147, 154563), (441, 51521)]