80920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{17}}^2$

素因数の和:52

約数の個数: 48

約数和(自身を含む): 221040

約数和(自身を除く): 140120

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 17, 20, 28, 34, 35, 40, 56, 68, 70, 85, 119, 136, 140, 170, 238, 280, 289, 340, 476, 578, 595, 680, 952, 1156, 1190, 1445, 2023, 2312, 2380, 2890, 4046, 4760, 5780, 8092, 10115, 11560, 16184, 20230, 40460, 80920]

約数ペア:

[(1, 80920), (2, 40460), (4, 20230), (5, 16184), (7, 11560), (8, 10115), (10, 8092), (14, 5780), (17, 4760), (20, 4046), (28, 2890), (34, 2380), (35, 2312), (40, 2023), (56, 1445), (68, 1190), (70, 1156), (85, 952), (119, 680), (136, 595), (140, 578), (170, 476), (238, 340), (280, 289)]