21891969

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{251}}^1\times {\mathrm{881}}^1$

素因数の和:1149

約数の個数: 24

約数和(自身を含む): 34673184

約数和(自身を除く): 12781215

約数列:

[1, 3, 9, 11, 33, 99, 251, 753, 881, 2259, 2643, 2761, 7929, 8283, 9691, 24849, 29073, 87219, 221131, 663393, 1990179, 2432441, 7297323, 21891969]

約数ペア:

[(1, 21891969), (3, 7297323), (9, 2432441), (11, 1990179), (33, 663393), (99, 221131), (251, 87219), (753, 29073), (881, 24849), (2259, 9691), (2643, 8283), (2761, 7929)]