669080

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{389}}^1$

素因数の和:443

約数の個数: 32

約数和(自身を含む): 1544400

約数和(自身を除く): 875320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 389, 430, 778, 860, 1556, 1720, 1945, 3112, 3890, 7780, 15560, 16727, 33454, 66908, 83635, 133816, 167270, 334540, 669080]

約数ペア:

[(1, 669080), (2, 334540), (4, 167270), (5, 133816), (8, 83635), (10, 66908), (20, 33454), (40, 16727), (43, 15560), (86, 7780), (172, 3890), (215, 3112), (344, 1945), (389, 1720), (430, 1556), (778, 860)]