2678900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1$

素因数の和:153

約数の個数: 72

約数和(自身を含む): 6874560

約数和(自身を除く): 4195660

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 43, 50, 70, 86, 89, 100, 140, 172, 175, 178, 215, 301, 350, 356, 430, 445, 602, 623, 700, 860, 890, 1075, 1204, 1246, 1505, 1780, 2150, 2225, 2492, 3010, 3115, 3827, 4300, 4450, 6020, 6230, 7525, 7654, 8900, 12460, 15050, 15308, 15575, 19135, 26789, 30100, 31150, 38270, 53578, 62300, 76540, 95675, 107156, 133945, 191350, 267890, 382700, 535780, 669725, 1339450, 2678900]

約数ペア:

[(1, 2678900), (2, 1339450), (4, 669725), (5, 535780), (7, 382700), (10, 267890), (14, 191350), (20, 133945), (25, 107156), (28, 95675), (35, 76540), (43, 62300), (50, 53578), (70, 38270), (86, 31150), (89, 30100), (100, 26789), (140, 19135), (172, 15575), (175, 15308), (178, 15050), (215, 12460), (301, 8900), (350, 7654), (356, 7525), (430, 6230), (445, 6020), (602, 4450), (623, 4300), (700, 3827), (860, 3115), (890, 3010), (1075, 2492), (1204, 2225), (1246, 2150), (1505, 1780)]