1680440

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{977}}^1$

素因数の和:1031

約数の個数: 32

約数和(自身を含む): 3872880

約数和(自身を除く): 2192440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 977, 1720, 1954, 3908, 4885, 7816, 9770, 19540, 39080, 42011, 84022, 168044, 210055, 336088, 420110, 840220, 1680440]

約数ペア:

[(1, 1680440), (2, 840220), (4, 420110), (5, 336088), (8, 210055), (10, 168044), (20, 84022), (40, 42011), (43, 39080), (86, 19540), (172, 9770), (215, 7816), (344, 4885), (430, 3908), (860, 1954), (977, 1720)]