21810873

素因数分解:

$3^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{13147}}^1$

素因数の和:13236

約数の個数: 16

約数和(自身を含む): 33658880

約数和(自身を除く): 11848007

約数列:

[1, 3, 7, 21, 79, 237, 553, 1659, 13147, 39441, 92029, 276087, 1038613, 3115839, 7270291, 21810873]

約数ペア:

[(1, 21810873), (3, 7270291), (7, 3115839), (21, 1038613), (79, 276087), (237, 92029), (553, 39441), (1659, 13147)]