21891308

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{13997}}^1$

素因数の和:14041

約数の個数: 24

約数和(自身を含む): 42329952

約数和(自身を除く): 20438644

約数列:

[1, 2, 4, 17, 23, 34, 46, 68, 92, 391, 782, 1564, 13997, 27994, 55988, 237949, 321931, 475898, 643862, 951796, 1287724, 5472827, 10945654, 21891308]

約数ペア:

[(1, 21891308), (2, 10945654), (4, 5472827), (17, 1287724), (23, 951796), (34, 643862), (46, 475898), (68, 321931), (92, 237949), (391, 55988), (782, 27994), (1564, 13997)]