21797019

素因数分解:

$3^4\times {\mathrm{59}}^1\times {\mathrm{4561}}^1$

素因数の和:4632

約数の個数: 20

約数和(自身を含む): 33120120

約数和(自身を除く): 11323101

約数列:

[1, 3, 9, 27, 59, 81, 177, 531, 1593, 4561, 4779, 13683, 41049, 123147, 269099, 369441, 807297, 2421891, 7265673, 21797019]

約数ペア:

[(1, 21797019), (3, 7265673), (9, 2421891), (27, 807297), (59, 369441), (81, 269099), (177, 123147), (531, 41049), (1593, 13683), (4561, 4779)]