18842721

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{109}}^1\times {\mathrm{1987}}^1$

素因数の和:2128

約数の個数: 16

約数和(自身を含む): 26241600

約数和(自身を除く): 7398879

約数列:

[1, 3, 29, 87, 109, 327, 1987, 3161, 5961, 9483, 57623, 172869, 216583, 649749, 6280907, 18842721]

約数ペア:

[(1, 18842721), (3, 6280907), (29, 649749), (87, 216583), (109, 172869), (327, 57623), (1987, 9483), (3161, 5961)]