684040

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{349}}^1$

素因数の和:374

約数の個数: 48

約数和(自身を含む): 1795500

約数和(自身を除く): 1111460

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 349, 392, 490, 698, 980, 1396, 1745, 1960, 2443, 2792, 3490, 4886, 6980, 9772, 12215, 13960, 17101, 19544, 24430, 34202, 48860, 68404, 85505, 97720, 136808, 171010, 342020, 684040]

約数ペア:

[(1, 684040), (2, 342020), (4, 171010), (5, 136808), (7, 97720), (8, 85505), (10, 68404), (14, 48860), (20, 34202), (28, 24430), (35, 19544), (40, 17101), (49, 13960), (56, 12215), (70, 9772), (98, 6980), (140, 4886), (196, 3490), (245, 2792), (280, 2443), (349, 1960), (392, 1745), (490, 1396), (698, 980)]