988820

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{1009}}^1$

素因数の和:1032

約数の個数: 36

約数和(自身を含む): 2417940

約数和(自身を除く): 1429120

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 1009, 2018, 4036, 5045, 7063, 10090, 14126, 20180, 28252, 35315, 49441, 70630, 98882, 141260, 197764, 247205, 494410, 988820]

約数ペア:

[(1, 988820), (2, 494410), (4, 247205), (5, 197764), (7, 141260), (10, 98882), (14, 70630), (20, 49441), (28, 35315), (35, 28252), (49, 20180), (70, 14126), (98, 10090), (140, 7063), (196, 5045), (245, 4036), (490, 2018), (980, 1009)]