21242731

素因数分解:

${\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{457}}^1$

素因数の和:570

約数の個数: 16

約数和(自身を含む): 23215104

約数和(自身を除く): 1972373

約数列:

[1, 23, 43, 47, 457, 989, 1081, 2021, 10511, 19651, 21479, 46483, 451973, 494017, 923597, 21242731]

約数ペア:

[(1, 21242731), (23, 923597), (43, 494017), (47, 451973), (457, 46483), (989, 21479), (1081, 19651), (2021, 10511)]