857990

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{103}}^1$

素因数の和:141

約数の個数: 48

約数和(自身を含む): 1920672

約数和(自身を除く): 1062682

約数列:

[1, 2, 5, 7, 10, 14, 17, 34, 35, 49, 70, 85, 98, 103, 119, 170, 206, 238, 245, 490, 515, 595, 721, 833, 1030, 1190, 1442, 1666, 1751, 3502, 3605, 4165, 5047, 7210, 8330, 8755, 10094, 12257, 17510, 24514, 25235, 50470, 61285, 85799, 122570, 171598, 428995, 857990]

約数ペア:

[(1, 857990), (2, 428995), (5, 171598), (7, 122570), (10, 85799), (14, 61285), (17, 50470), (34, 25235), (35, 24514), (49, 17510), (70, 12257), (85, 10094), (98, 8755), (103, 8330), (119, 7210), (170, 5047), (206, 4165), (238, 3605), (245, 3502), (490, 1751), (515, 1666), (595, 1442), (721, 1190), (833, 1030)]