20480271

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{51329}}^1$

素因数の和:51358

約数の個数: 16

約数和(自身を含む): 32851200

約数和(自身を除く): 12370929

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 51329, 153987, 359303, 975251, 1077909, 2925753, 6826757, 20480271]

約数ペア:

[(1, 20480271), (3, 6826757), (7, 2925753), (19, 1077909), (21, 975251), (57, 359303), (133, 153987), (399, 51329)]