28185633

素因数分解:

$3^2\times 7^2\times {\mathrm{63913}}^1$

素因数の和:63933

約数の個数: 18

約数和(自身を含む): 47360274

約数和(自身を除く): 19174641

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 63913, 191739, 447391, 575217, 1342173, 3131737, 4026519, 9395211, 28185633]

約数ペア:

[(1, 28185633), (3, 9395211), (7, 4026519), (9, 3131737), (21, 1342173), (49, 575217), (63, 447391), (147, 191739), (441, 63913)]