21538647

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{9689}}^1$

素因数の和:9727

約数の個数: 24

約数和(自身を含む): 35271600

約数和(自身を除く): 13732953

約数列:

[1, 3, 9, 13, 19, 39, 57, 117, 171, 247, 741, 2223, 9689, 29067, 87201, 125957, 184091, 377871, 552273, 1133613, 1656819, 2393183, 7179549, 21538647]

約数ペア:

[(1, 21538647), (3, 7179549), (9, 2393183), (13, 1656819), (19, 1133613), (39, 552273), (57, 377871), (117, 184091), (171, 125957), (247, 87201), (741, 29067), (2223, 9689)]