20281569

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{4621}}^1$

素因数の和:4661

約数の個数: 32

約数和(自身を含む): 35496960

約数和(自身を除く): 15215391

約数列:

[1, 3, 7, 11, 19, 21, 33, 57, 77, 133, 209, 231, 399, 627, 1463, 4389, 4621, 13863, 32347, 50831, 87799, 97041, 152493, 263397, 355817, 614593, 965789, 1067451, 1843779, 2897367, 6760523, 20281569]

約数ペア:

[(1, 20281569), (3, 6760523), (7, 2897367), (11, 1843779), (19, 1067451), (21, 965789), (33, 614593), (57, 355817), (77, 263397), (133, 152493), (209, 97041), (231, 87799), (399, 50831), (627, 32347), (1463, 13863), (4389, 4621)]