21031755367

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{1087}}^1\times {\mathrm{145477}}^1$

素因数の和:146590

約数の個数: 16

約数和(自身を含む): 25324810240

約数和(自身を除く): 4293054873

約数列:

[1, 7, 19, 133, 1087, 7609, 20653, 144571, 145477, 1018339, 2764063, 19348441, 158133499, 1106934493, 3004536481, 21031755367]

約数ペア:

[(1, 21031755367), (7, 3004536481), (19, 1106934493), (133, 158133499), (1087, 19348441), (7609, 2764063), (20653, 1018339), (144571, 145477)]