2642780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{439}}^1$

素因数の和:498

約数の個数: 48

約数和(自身を含む): 6504960

約数和(自身を除く): 3862180

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 43, 70, 86, 140, 172, 215, 301, 430, 439, 602, 860, 878, 1204, 1505, 1756, 2195, 3010, 3073, 4390, 6020, 6146, 8780, 12292, 15365, 18877, 30730, 37754, 61460, 75508, 94385, 132139, 188770, 264278, 377540, 528556, 660695, 1321390, 2642780]

約数ペア:

[(1, 2642780), (2, 1321390), (4, 660695), (5, 528556), (7, 377540), (10, 264278), (14, 188770), (20, 132139), (28, 94385), (35, 75508), (43, 61460), (70, 37754), (86, 30730), (140, 18877), (172, 15365), (215, 12292), (301, 8780), (430, 6146), (439, 6020), (602, 4390), (860, 3073), (878, 3010), (1204, 2195), (1505, 1756)]