21357544

素因数分解:

$2^3\times {\mathrm{13}}^2\times {\mathrm{15797}}^1$

素因数の和:15829

約数の個数: 24

約数和(自身を含む): 43365510

約数和(自身を除く): 22007966

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 169, 338, 676, 1352, 15797, 31594, 63188, 126376, 205361, 410722, 821444, 1642888, 2669693, 5339386, 10678772, 21357544]

約数ペア:

[(1, 21357544), (2, 10678772), (4, 5339386), (8, 2669693), (13, 1642888), (26, 821444), (52, 410722), (104, 205361), (169, 126376), (338, 63188), (676, 31594), (1352, 15797)]