667660

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{251}}^1$

素因数の和:286

約数の個数: 48

約数和(自身を含む): 1693440

約数和(自身を除く): 1025780

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 70, 76, 95, 133, 140, 190, 251, 266, 380, 502, 532, 665, 1004, 1255, 1330, 1757, 2510, 2660, 3514, 4769, 5020, 7028, 8785, 9538, 17570, 19076, 23845, 33383, 35140, 47690, 66766, 95380, 133532, 166915, 333830, 667660]

約数ペア:

[(1, 667660), (2, 333830), (4, 166915), (5, 133532), (7, 95380), (10, 66766), (14, 47690), (19, 35140), (20, 33383), (28, 23845), (35, 19076), (38, 17570), (70, 9538), (76, 8785), (95, 7028), (133, 5020), (140, 4769), (190, 3514), (251, 2660), (266, 2510), (380, 1757), (502, 1330), (532, 1255), (665, 1004)]