21553961

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{7933}}^1$

素因数の和:7976

約数の個数: 16

約数和(自身を含む): 26658240

約数和(自身を除く): 5104279

約数列:

[1, 11, 13, 19, 143, 209, 247, 2717, 7933, 87263, 103129, 150727, 1134419, 1657997, 1959451, 21553961]

約数ペア:

[(1, 21553961), (11, 1959451), (13, 1657997), (19, 1134419), (143, 150727), (209, 103129), (247, 87263), (2717, 7933)]