21556017

素因数分解:

$3^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{6709}}^1$

素因数の和:6742

約数の個数: 32

約数和(自身を含む): 38649600

約数和(自身を除く): 17093583

約数列:

[1, 3, 7, 9, 17, 21, 27, 51, 63, 119, 153, 189, 357, 459, 1071, 3213, 6709, 20127, 46963, 60381, 114053, 140889, 181143, 342159, 422667, 798371, 1026477, 1268001, 2395113, 3079431, 7185339, 21556017]

約数ペア:

[(1, 21556017), (3, 7185339), (7, 3079431), (9, 2395113), (17, 1268001), (21, 1026477), (27, 798371), (51, 422667), (63, 342159), (119, 181143), (153, 140889), (189, 114053), (357, 60381), (459, 46963), (1071, 20127), (3213, 6709)]