21131644

素因数分解:

$2^2\times {\mathrm{97}}^1\times {\mathrm{107}}^1\times {\mathrm{509}}^1$

素因数の和:717

約数の個数: 24

約数和(自身を含む): 37784880

約数和(自身を除く): 16653236

約数列:

[1, 2, 4, 97, 107, 194, 214, 388, 428, 509, 1018, 2036, 10379, 20758, 41516, 49373, 54463, 98746, 108926, 197492, 217852, 5282911, 10565822, 21131644]

約数ペア:

[(1, 21131644), (2, 10565822), (4, 5282911), (97, 217852), (107, 197492), (194, 108926), (214, 98746), (388, 54463), (428, 49373), (509, 41516), (1018, 20758), (2036, 10379)]