1977640

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{1009}}^1$

素因数の和:1034

約数の個数: 48

約数和(自身を含む): 5181300

約数和(自身を除く): 3203660

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1009, 1960, 2018, 4036, 5045, 7063, 8072, 10090, 14126, 20180, 28252, 35315, 40360, 49441, 56504, 70630, 98882, 141260, 197764, 247205, 282520, 395528, 494410, 988820, 1977640]

約数ペア:

[(1, 1977640), (2, 988820), (4, 494410), (5, 395528), (7, 282520), (8, 247205), (10, 197764), (14, 141260), (20, 98882), (28, 70630), (35, 56504), (40, 49441), (49, 40360), (56, 35315), (70, 28252), (98, 20180), (140, 14126), (196, 10090), (245, 8072), (280, 7063), (392, 5045), (490, 4036), (980, 2018), (1009, 1960)]