26991573

素因数分解:

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

素因数の和:545

約数の個数: 32

約数和(自身を含む): 42780672

約数和(自身を除く): 15789099

約数列:

[1, 3, 7, 21, 43, 71, 129, 213, 301, 421, 497, 903, 1263, 1491, 2947, 3053, 8841, 9159, 18103, 21371, 29891, 54309, 64113, 89673, 126721, 209237, 380163, 627711, 1285313, 3855939, 8997191, 26991573]

約数ペア:

[(1, 26991573), (3, 8997191), (7, 3855939), (21, 1285313), (43, 627711), (71, 380163), (129, 209237), (213, 126721), (301, 89673), (421, 64113), (497, 54309), (903, 29891), (1263, 21371), (1491, 18103), (2947, 9159), (3053, 8841)]