21137181

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{13219}}^1$

素因数の和:13276

約数の個数: 16

約数和(自身を含む): 31093440

約数和(自身を除く): 9956259

約数列:

[1, 3, 13, 39, 41, 123, 533, 1599, 13219, 39657, 171847, 515541, 541979, 1625937, 7045727, 21137181]

約数ペア:

[(1, 21137181), (3, 7045727), (13, 1625937), (39, 541979), (41, 515541), (123, 171847), (533, 39657), (1599, 13219)]