21978086

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{887}}^1\times {\mathrm{953}}^1$

素因数の和:1855

約数の個数: 16

約数和(自身を含む): 35580384

約数和(自身を除く): 13602298

約数列:

[1, 2, 13, 26, 887, 953, 1774, 1906, 11531, 12389, 23062, 24778, 845311, 1690622, 10989043, 21978086]

約数ペア:

[(1, 21978086), (2, 10989043), (13, 1690622), (26, 845311), (887, 24778), (953, 23062), (1774, 12389), (1906, 11531)]