20437281

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{223}}^1\times {\mathrm{599}}^1$

素因数の和:845

約数の個数: 24

約数和(自身を含む): 31449600

約数和(自身を除く): 11012319

約数列:

[1, 3, 9, 17, 51, 153, 223, 599, 669, 1797, 2007, 3791, 5391, 10183, 11373, 30549, 34119, 91647, 133577, 400731, 1202193, 2270809, 6812427, 20437281]

約数ペア:

[(1, 20437281), (3, 6812427), (9, 2270809), (17, 1202193), (51, 400731), (153, 133577), (223, 91647), (599, 34119), (669, 30549), (1797, 11373), (2007, 10183), (3791, 5391)]