21438794

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{397}}^1$

素因数の和:510

約数の個数: 32

約数和(自身を含む): 36374016

約数和(自身を除く): 14935222

約数列:

[1, 2, 13, 26, 31, 62, 67, 134, 397, 403, 794, 806, 871, 1742, 2077, 4154, 5161, 10322, 12307, 24614, 26599, 27001, 53198, 54002, 159991, 319982, 345787, 691574, 824569, 1649138, 10719397, 21438794]

約数ペア:

[(1, 21438794), (2, 10719397), (13, 1649138), (26, 824569), (31, 691574), (62, 345787), (67, 319982), (134, 159991), (397, 54002), (403, 53198), (794, 27001), (806, 26599), (871, 24614), (1742, 12307), (2077, 10322), (4154, 5161)]