20810313

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{1123}}^1$

素因数の和:1229

約数の個数: 24

約数和(自身を含む): 31561920

約数和(自身を除く): 10751607

約数列:

[1, 3, 9, 29, 71, 87, 213, 261, 639, 1123, 2059, 3369, 6177, 10107, 18531, 32567, 79733, 97701, 239199, 293103, 717597, 2312257, 6936771, 20810313]

約数ペア:

[(1, 20810313), (3, 6936771), (9, 2312257), (29, 717597), (71, 293103), (87, 239199), (213, 97701), (261, 79733), (639, 32567), (1123, 18531), (2059, 10107), (3369, 6177)]