21291210717

素因数分解:

$3^1\times 7^1\times {\mathrm{7717}}^1\times {\mathrm{131381}}^1$

素因数の和:139108

約数の個数: 16

約数和(自身を含む): 32448200832

約数和(自身を除く): 11156990115

約数列:

[1, 3, 7, 21, 7717, 23151, 54019, 131381, 162057, 394143, 919667, 2759001, 1013867177, 3041601531, 7097070239, 21291210717]

約数ペア:

[(1, 21291210717), (3, 7097070239), (7, 3041601531), (21, 1013867177), (7717, 2759001), (23151, 919667), (54019, 394143), (131381, 162057)]