21826413

素因数分解:

$3^2\times 7^2\times {\mathrm{43}}^1\times {\mathrm{1151}}^1$

素因数の和:1214

約数の個数: 36

約数和(自身を含む): 37559808

約数和(自身を除く): 15733395

約数列:

[1, 3, 7, 9, 21, 43, 49, 63, 129, 147, 301, 387, 441, 903, 1151, 2107, 2709, 3453, 6321, 8057, 10359, 18963, 24171, 49493, 56399, 72513, 148479, 169197, 346451, 445437, 507591, 1039353, 2425157, 3118059, 7275471, 21826413]

約数ペア:

[(1, 21826413), (3, 7275471), (7, 3118059), (9, 2425157), (21, 1039353), (43, 507591), (49, 445437), (63, 346451), (129, 169197), (147, 148479), (301, 72513), (387, 56399), (441, 49493), (903, 24171), (1151, 18963), (2107, 10359), (2709, 8057), (3453, 6321)]