18991047

素因数分解:

$3^1\times {\mathrm{79}}^1\times {\mathrm{227}}^1\times {\mathrm{353}}^1$

素因数の和:662

約数の個数: 16

約数和(自身を含む): 25827840

約数和(自身を除く): 6836793

約数列:

[1, 3, 79, 227, 237, 353, 681, 1059, 17933, 27887, 53799, 80131, 83661, 240393, 6330349, 18991047]

約数ペア:

[(1, 18991047), (3, 6330349), (79, 240393), (227, 83661), (237, 80131), (353, 53799), (681, 27887), (1059, 17933)]