638638

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1$

素因数の和:73

約数の個数: 48

約数和(自身を含む): 1340640

約数和(自身を除く): 702002

約数列:

[1, 2, 7, 11, 13, 14, 22, 26, 29, 58, 77, 91, 121, 143, 154, 182, 203, 242, 286, 319, 377, 406, 638, 754, 847, 1001, 1573, 1694, 2002, 2233, 2639, 3146, 3509, 4147, 4466, 5278, 7018, 8294, 11011, 22022, 24563, 29029, 45617, 49126, 58058, 91234, 319319, 638638]

約数ペア:

[(1, 638638), (2, 319319), (7, 91234), (11, 58058), (13, 49126), (14, 45617), (22, 29029), (26, 24563), (29, 22022), (58, 11011), (77, 8294), (91, 7018), (121, 5278), (143, 4466), (154, 4147), (182, 3509), (203, 3146), (242, 2639), (286, 2233), (319, 2002), (377, 1694), (406, 1573), (638, 1001), (754, 847)]