21856263

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{3919}}^1$

素因数の和:3959

約数の個数: 24

約数和(自身を含む): 34433280

約数和(自身を除く): 12577017

約数列:

[1, 3, 11, 13, 33, 39, 143, 169, 429, 507, 1859, 3919, 5577, 11757, 43109, 50947, 129327, 152841, 560417, 662311, 1681251, 1986933, 7285421, 21856263]

約数ペア:

[(1, 21856263), (3, 7285421), (11, 1986933), (13, 1681251), (33, 662311), (39, 560417), (143, 152841), (169, 129327), (429, 50947), (507, 43109), (1859, 11757), (3919, 5577)]