81506887

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{103}}^1\times {\mathrm{239}}^1$

素因数の和:403

約数の個数: 32

約数和(自身を含む): 105431040

約数和(自身を除く): 23924153

約数列:

[1, 7, 11, 43, 77, 103, 239, 301, 473, 721, 1133, 1673, 2629, 3311, 4429, 7931, 10277, 18403, 24617, 31003, 48719, 71939, 113047, 172319, 270787, 341033, 791329, 1058531, 1895509, 7409717, 11643841, 81506887]

約数ペア:

[(1, 81506887), (7, 11643841), (11, 7409717), (43, 1895509), (77, 1058531), (103, 791329), (239, 341033), (301, 270787), (473, 172319), (721, 113047), (1133, 71939), (1673, 48719), (2629, 31003), (3311, 24617), (4429, 18403), (7931, 10277)]