79971680

素因数分解:

$2^5\times 5^1\times {\mathrm{397}}^1\times {\mathrm{1259}}^1$

素因数の和:1671

約数の個数: 48

約数和(自身を含む): 189559440

約数和(自身を除く): 109587760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 397, 794, 1259, 1588, 1985, 2518, 3176, 3970, 5036, 6295, 6352, 7940, 10072, 12590, 12704, 15880, 20144, 25180, 31760, 40288, 50360, 63520, 100720, 201440, 499823, 999646, 1999292, 2499115, 3998584, 4998230, 7997168, 9996460, 15994336, 19992920, 39985840, 79971680]

約数ペア:

[(1, 79971680), (2, 39985840), (4, 19992920), (5, 15994336), (8, 9996460), (10, 7997168), (16, 4998230), (20, 3998584), (32, 2499115), (40, 1999292), (80, 999646), (160, 499823), (397, 201440), (794, 100720), (1259, 63520), (1588, 50360), (1985, 40288), (2518, 31760), (3176, 25180), (3970, 20144), (5036, 15880), (6295, 12704), (6352, 12590), (7940, 10072)]