19870333

素因数分解:

$7^3\times {\mathrm{19}}^1\times {\mathrm{3049}}^1$

素因数の和:3089

約数の個数: 16

約数和(自身を含む): 24400000

約数和(自身を除く): 4529667

約数列:

[1, 7, 19, 49, 133, 343, 931, 3049, 6517, 21343, 57931, 149401, 405517, 1045807, 2838619, 19870333]

約数ペア:

[(1, 19870333), (7, 2838619), (19, 1045807), (49, 405517), (133, 149401), (343, 57931), (931, 21343), (3049, 6517)]