80974719

素因数分解:

$3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{421}}^1$

素因数の和:548

約数の個数: 48

約数和(自身を含む): 139037184

約数和(自身を除く): 58062465

約数列:

[1, 3, 7, 9, 21, 43, 63, 71, 129, 213, 301, 387, 421, 497, 639, 903, 1263, 1491, 2709, 2947, 3053, 3789, 4473, 8841, 9159, 18103, 21371, 26523, 27477, 29891, 54309, 64113, 89673, 126721, 162927, 192339, 209237, 269019, 380163, 627711, 1140489, 1285313, 1883133, 3855939, 8997191, 11567817, 26991573, 80974719]

約数ペア:

[(1, 80974719), (3, 26991573), (7, 11567817), (9, 8997191), (21, 3855939), (43, 1883133), (63, 1285313), (71, 1140489), (129, 627711), (213, 380163), (301, 269019), (387, 209237), (421, 192339), (497, 162927), (639, 126721), (903, 89673), (1263, 64113), (1491, 54309), (2709, 29891), (2947, 27477), (3053, 26523), (3789, 21371), (4473, 18103), (8841, 9159)]