220121780

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{647417}}^1$

素因数の和:647443

約数の個数: 24

約数和(自身を含む): 489448008

約数和(自身を除く): 269326228

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 647417, 1294834, 2589668, 3237085, 6474170, 11006089, 12948340, 22012178, 44024356, 55030445, 110060890, 220121780]

約数ペア:

[(1, 220121780), (2, 110060890), (4, 55030445), (5, 44024356), (10, 22012178), (17, 12948340), (20, 11006089), (34, 6474170), (68, 3237085), (85, 2589668), (170, 1294834), (340, 647417)]