21528710

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{16187}}^1$

素因数の和:16220

約数の個数: 32

約数和(自身を含む): 46621440

約数和(自身を除く): 25092730

約数列:

[1, 2, 5, 7, 10, 14, 19, 35, 38, 70, 95, 133, 190, 266, 665, 1330, 16187, 32374, 80935, 113309, 161870, 226618, 307553, 566545, 615106, 1133090, 1537765, 2152871, 3075530, 4305742, 10764355, 21528710]

約数ペア:

[(1, 21528710), (2, 10764355), (5, 4305742), (7, 3075530), (10, 2152871), (14, 1537765), (19, 1133090), (35, 615106), (38, 566545), (70, 307553), (95, 226618), (133, 161870), (190, 113309), (266, 80935), (665, 32374), (1330, 16187)]