18974417

素因数分解:

$7^3\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{107}}^1$

素因数の和:186

約数の個数: 32

約数和(自身を含む): 24883200

約数和(自身を除く): 5908783

約数列:

[1, 7, 11, 47, 49, 77, 107, 329, 343, 517, 539, 749, 1177, 2303, 3619, 3773, 5029, 5243, 8239, 16121, 25333, 35203, 36701, 55319, 57673, 177331, 246421, 387233, 403711, 1724947, 2710631, 18974417]

約数ペア:

[(1, 18974417), (7, 2710631), (11, 1724947), (47, 403711), (49, 387233), (77, 246421), (107, 177331), (329, 57673), (343, 55319), (517, 36701), (539, 35203), (749, 25333), (1177, 16121), (2303, 8239), (3619, 5243), (3773, 5029)]