18081861

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{21001}}^1$

素因数の和:21052

約数の個数: 16

約数和(自身を含む): 28226688

約数和(自身を除く): 10144827

約数列:

[1, 3, 7, 21, 41, 123, 287, 861, 21001, 63003, 147007, 441021, 861041, 2583123, 6027287, 18081861]

約数ペア:

[(1, 18081861), (3, 6027287), (7, 2583123), (21, 861041), (41, 441021), (123, 147007), (287, 63003), (861, 21001)]