21419564

素因数分解:

$2^2\times {\mathrm{71}}^1\times {\mathrm{199}}^1\times {\mathrm{379}}^1$

素因数の和:653

約数の個数: 24

約数和(自身を含む): 38304000

約数和(自身を除く): 16884436

約数列:

[1, 2, 4, 71, 142, 199, 284, 379, 398, 758, 796, 1516, 14129, 26909, 28258, 53818, 56516, 75421, 107636, 150842, 301684, 5354891, 10709782, 21419564]

約数ペア:

[(1, 21419564), (2, 10709782), (4, 5354891), (71, 301684), (142, 150842), (199, 107636), (284, 75421), (379, 56516), (398, 53818), (758, 28258), (796, 26909), (1516, 14129)]