21149121

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{43787}}^1$

素因数の和:43820

約数の個数: 16

約数和(自身を含む): 33629184

約数和(自身を除く): 12480063

約数列:

[1, 3, 7, 21, 23, 69, 161, 483, 43787, 131361, 306509, 919527, 1007101, 3021303, 7049707, 21149121]

約数ペア:

[(1, 21149121), (3, 7049707), (7, 3021303), (21, 1007101), (23, 919527), (69, 306509), (161, 131361), (483, 43787)]