21528353

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{311}}^1$

素因数の和:389

約数の個数: 32

約数和(自身を含む): 28753920

約数和(自身を除く): 7225567

約数列:

[1, 7, 11, 29, 31, 77, 203, 217, 311, 319, 341, 899, 2177, 2233, 2387, 3421, 6293, 9019, 9641, 9889, 23947, 63133, 67487, 69223, 99209, 106051, 279589, 694463, 742357, 1957123, 3075479, 21528353]

約数ペア:

[(1, 21528353), (7, 3075479), (11, 1957123), (29, 742357), (31, 694463), (77, 279589), (203, 106051), (217, 99209), (311, 69223), (319, 67487), (341, 63133), (899, 23947), (2177, 9889), (2233, 9641), (2387, 9019), (3421, 6293)]