21021663

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{6823}}^1$

素因数の和:6918

約数の個数: 16

約数和(自身を含む): 30571520

約数和(自身を除く): 9549857

約数列:

[1, 3, 13, 39, 79, 237, 1027, 3081, 6823, 20469, 88699, 266097, 539017, 1617051, 7007221, 21021663]

約数ペア:

[(1, 21021663), (3, 7007221), (13, 1617051), (39, 539017), (79, 266097), (237, 88699), (1027, 20469), (3081, 6823)]