243756723

素因数分解:

$3^1\times 7^4\times {\mathrm{43}}^1\times {\mathrm{787}}^1$

素因数の和:861

約数の個数: 40

約数和(自身を含む): 388465088

約数和(自身を除く): 144708365

約数列:

[1, 3, 7, 21, 43, 49, 129, 147, 301, 343, 787, 903, 1029, 2107, 2361, 2401, 5509, 6321, 7203, 14749, 16527, 33841, 38563, 44247, 101523, 103243, 115689, 236887, 269941, 309729, 710661, 809823, 1658209, 1889587, 4974627, 5668761, 11607463, 34822389, 81252241, 243756723]

約数ペア:

[(1, 243756723), (3, 81252241), (7, 34822389), (21, 11607463), (43, 5668761), (49, 4974627), (129, 1889587), (147, 1658209), (301, 809823), (343, 710661), (787, 309729), (903, 269941), (1029, 236887), (2107, 115689), (2361, 103243), (2401, 101523), (5509, 44247), (6321, 38563), (7203, 33841), (14749, 16527)]