66640

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{17}}^1$

素因数の和:44

約数の個数: 60

約数和(自身を含む): 190836

約数和(自身を除く): 124196

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 20, 28, 34, 35, 40, 49, 56, 68, 70, 80, 85, 98, 112, 119, 136, 140, 170, 196, 238, 245, 272, 280, 340, 392, 476, 490, 560, 595, 680, 784, 833, 952, 980, 1190, 1360, 1666, 1904, 1960, 2380, 3332, 3920, 4165, 4760, 6664, 8330, 9520, 13328, 16660, 33320, 66640]

約数ペア:

[(1, 66640), (2, 33320), (4, 16660), (5, 13328), (7, 9520), (8, 8330), (10, 6664), (14, 4760), (16, 4165), (17, 3920), (20, 3332), (28, 2380), (34, 1960), (35, 1904), (40, 1666), (49, 1360), (56, 1190), (68, 980), (70, 952), (80, 833), (85, 784), (98, 680), (112, 595), (119, 560), (136, 490), (140, 476), (170, 392), (196, 340), (238, 280), (245, 272)]