21001527

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{131}}^1\times {\mathrm{379}}^1$

素因数の和:563

約数の個数: 24

約数和(自身を含む): 31299840

約数和(自身を除く): 10298313

約数列:

[1, 3, 9, 47, 131, 141, 379, 393, 423, 1137, 1179, 3411, 6157, 17813, 18471, 49649, 53439, 55413, 148947, 160317, 446841, 2333503, 7000509, 21001527]

約数ペア:

[(1, 21001527), (3, 7000509), (9, 2333503), (47, 446841), (131, 160317), (141, 148947), (379, 55413), (393, 53439), (423, 49649), (1137, 18471), (1179, 17813), (3411, 6157)]