21828359

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{4003}}^1$

素因数の和:4070

約数の個数: 16

約数和(自身を含む): 26906880

約数和(自身を除く): 5078521

約数列:

[1, 7, 19, 41, 133, 287, 779, 4003, 5453, 28021, 76057, 164123, 532399, 1148861, 3118337, 21828359]

約数ペア:

[(1, 21828359), (7, 3118337), (19, 1148861), (41, 532399), (133, 164123), (287, 76057), (779, 28021), (4003, 5453)]