21208889471

素因数分解:

$7^3\times {\mathrm{11}}^1\times {\mathrm{443}}^1\times {\mathrm{12689}}^1$

素因数の和:13164

約数の個数: 32

約数和(自身を含む): 27044928000

約数和(自身を除く): 5836038529

約数列:

[1, 7, 11, 49, 77, 343, 443, 539, 3101, 3773, 4873, 12689, 21707, 34111, 88823, 139579, 151949, 238777, 621761, 977053, 1671439, 4352327, 5621227, 6839371, 39348589, 47875597, 61833497, 275440123, 432834479, 1928080861, 3029841353, 21208889471]

約数ペア:

[(1, 21208889471), (7, 3029841353), (11, 1928080861), (49, 432834479), (77, 275440123), (343, 61833497), (443, 47875597), (539, 39348589), (3101, 6839371), (3773, 5621227), (4873, 4352327), (12689, 1671439), (21707, 977053), (34111, 621761), (88823, 238777), (139579, 151949)]