80996440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{289273}}^1$

素因数の和:289291

約数の個数: 32

約数和(自身を含む): 208277280

約数和(自身を除く): 127280840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 289273, 578546, 1157092, 1446365, 2024911, 2314184, 2892730, 4049822, 5785460, 8099644, 10124555, 11570920, 16199288, 20249110, 40498220, 80996440]

約数ペア:

[(1, 80996440), (2, 40498220), (4, 20249110), (5, 16199288), (7, 11570920), (8, 10124555), (10, 8099644), (14, 5785460), (20, 4049822), (28, 2892730), (35, 2314184), (40, 2024911), (56, 1446365), (70, 1157092), (140, 578546), (280, 289273)]