21220083

素因数分解:

$3^3\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{661}}^1$

素因数の和:740

約数の個数: 32

約数和(自身を含む): 33364800

約数和(自身を除く): 12144717

約数列:

[1, 3, 9, 27, 29, 41, 87, 123, 261, 369, 661, 783, 1107, 1189, 1983, 3567, 5949, 10701, 17847, 19169, 27101, 32103, 57507, 81303, 172521, 243909, 517563, 731727, 785929, 2357787, 7073361, 21220083]

約数ペア:

[(1, 21220083), (3, 7073361), (9, 2357787), (27, 785929), (29, 731727), (41, 517563), (87, 243909), (123, 172521), (261, 81303), (369, 57507), (661, 32103), (783, 27101), (1107, 19169), (1189, 17847), (1983, 10701), (3567, 5949)]