666911560

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{340261}}^1$

素因数の和:340286

約数の個数: 48

約数和(自身を含む): 1745544060

約数和(自身を除く): 1078632500

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 340261, 680522, 1361044, 1701305, 2381827, 2722088, 3402610, 4763654, 6805220, 9527308, 11909135, 13610440, 16672789, 19054616, 23818270, 33345578, 47636540, 66691156, 83363945, 95273080, 133382312, 166727890, 333455780, 666911560]

約数ペア:

[(1, 666911560), (2, 333455780), (4, 166727890), (5, 133382312), (7, 95273080), (8, 83363945), (10, 66691156), (14, 47636540), (20, 33345578), (28, 23818270), (35, 19054616), (40, 16672789), (49, 13610440), (56, 11909135), (70, 9527308), (98, 6805220), (140, 4763654), (196, 3402610), (245, 2722088), (280, 2381827), (392, 1701305), (490, 1361044), (980, 680522), (1960, 340261)]