79945520

素因数分解:

$2^4\times 5^1\times {\mathrm{641}}^1\times {\mathrm{1559}}^1$

素因数の和:2213

約数の個数: 40

約数和(自身を含む): 186282720

約数和(自身を除く): 106337200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 641, 1282, 1559, 2564, 3118, 3205, 5128, 6236, 6410, 7795, 10256, 12472, 12820, 15590, 24944, 25640, 31180, 51280, 62360, 124720, 999319, 1998638, 3997276, 4996595, 7994552, 9993190, 15989104, 19986380, 39972760, 79945520]

約数ペア:

[(1, 79945520), (2, 39972760), (4, 19986380), (5, 15989104), (8, 9993190), (10, 7994552), (16, 4996595), (20, 3997276), (40, 1998638), (80, 999319), (641, 124720), (1282, 62360), (1559, 51280), (2564, 31180), (3118, 25640), (3205, 24944), (5128, 15590), (6236, 12820), (6410, 12472), (7795, 10256)]