80739520

素因数分解:

$2^6\times 5^1\times {\mathrm{191}}^1\times {\mathrm{1321}}^1$

素因数の和:1529

約数の個数: 56

約数和(自身を含む): 193413888

約数和(自身を除く): 112674368

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 191, 320, 382, 764, 955, 1321, 1528, 1910, 2642, 3056, 3820, 5284, 6112, 6605, 7640, 10568, 12224, 13210, 15280, 21136, 26420, 30560, 42272, 52840, 61120, 84544, 105680, 211360, 252311, 422720, 504622, 1009244, 1261555, 2018488, 2523110, 4036976, 5046220, 8073952, 10092440, 16147904, 20184880, 40369760, 80739520]

約数ペア:

[(1, 80739520), (2, 40369760), (4, 20184880), (5, 16147904), (8, 10092440), (10, 8073952), (16, 5046220), (20, 4036976), (32, 2523110), (40, 2018488), (64, 1261555), (80, 1009244), (160, 504622), (191, 422720), (320, 252311), (382, 211360), (764, 105680), (955, 84544), (1321, 61120), (1528, 52840), (1910, 42272), (2642, 30560), (3056, 26420), (3820, 21136), (5284, 15280), (6112, 13210), (6605, 12224), (7640, 10568)]