18949809

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{2161}}^1$

素因数の和:2280

約数の個数: 16

約数和(自身を含む): 26289920

約数和(自身を除く): 7340111

約数列:

[1, 3, 37, 79, 111, 237, 2161, 2923, 6483, 8769, 79957, 170719, 239871, 512157, 6316603, 18949809]

約数ペア:

[(1, 18949809), (3, 6316603), (37, 512157), (79, 239871), (111, 170719), (237, 79957), (2161, 8769), (2923, 6483)]