21608853

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{8647}}^1$

素因数の和:8681

約数の個数: 24

約数和(自身を含む): 35491392

約数和(自身を除く): 13882539

約数列:

[1, 3, 7, 17, 21, 49, 51, 119, 147, 357, 833, 2499, 8647, 25941, 60529, 146999, 181587, 423703, 440997, 1028993, 1271109, 3086979, 7202951, 21608853]

約数ペア:

[(1, 21608853), (3, 7202951), (7, 3086979), (17, 1271109), (21, 1028993), (49, 440997), (51, 423703), (119, 181587), (147, 146999), (357, 60529), (833, 25941), (2499, 8647)]