1988860

素因数分解:

$2^2\times 5^1\times {\mathrm{277}}^1\times {\mathrm{359}}^1$

素因数の和:645

約数の個数: 24

約数和(自身を含む): 4203360

約数和(自身を除く): 2214500

約数列:

[1, 2, 4, 5, 10, 20, 277, 359, 554, 718, 1108, 1385, 1436, 1795, 2770, 3590, 5540, 7180, 99443, 198886, 397772, 497215, 994430, 1988860]

約数ペア:

[(1, 1988860), (2, 994430), (4, 497215), (5, 397772), (10, 198886), (20, 99443), (277, 7180), (359, 5540), (554, 3590), (718, 2770), (1108, 1795), (1385, 1436)]