2019280

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{587}}^1$

素因数の和:643

約数の個数: 40

約数和(自身を含む): 4812192

約数和(自身を除く): 2792912

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 587, 688, 860, 1174, 1720, 2348, 2935, 3440, 4696, 5870, 9392, 11740, 23480, 25241, 46960, 50482, 100964, 126205, 201928, 252410, 403856, 504820, 1009640, 2019280]

約数ペア:

[(1, 2019280), (2, 1009640), (4, 504820), (5, 403856), (8, 252410), (10, 201928), (16, 126205), (20, 100964), (40, 50482), (43, 46960), (80, 25241), (86, 23480), (172, 11740), (215, 9392), (344, 5870), (430, 4696), (587, 3440), (688, 2935), (860, 2348), (1174, 1720)]