21152259

素因数分解:

$3^4\times {\mathrm{43}}^1\times {\mathrm{6073}}^1$

素因数の和:6128

約数の個数: 20

約数和(自身を含む): 32337976

約数和(自身を除く): 11185717

約数列:

[1, 3, 9, 27, 43, 81, 129, 387, 1161, 3483, 6073, 18219, 54657, 163971, 261139, 491913, 783417, 2350251, 7050753, 21152259]

約数ペア:

[(1, 21152259), (3, 7050753), (9, 2350251), (27, 783417), (43, 491913), (81, 261139), (129, 163971), (387, 54657), (1161, 18219), (3483, 6073)]