20181861

素因数分解:

$3^2\times 7^1\times {\mathrm{563}}^1\times {\mathrm{569}}^1$

素因数の和:1145

約数の個数: 24

約数和(自身を含む): 33433920

約数和(自身を除く): 13252059

約数列:

[1, 3, 7, 9, 21, 63, 563, 569, 1689, 1707, 3941, 3983, 5067, 5121, 11823, 11949, 35469, 35847, 320347, 961041, 2242429, 2883123, 6727287, 20181861]

約数ペア:

[(1, 20181861), (3, 6727287), (7, 2883123), (9, 2242429), (21, 961041), (63, 320347), (563, 35847), (569, 35469), (1689, 11949), (1707, 11823), (3941, 5121), (3983, 5067)]