19901763

素因数分解:

$3^2\times 7^1\times {\mathrm{103}}^1\times {\mathrm{3067}}^1$

素因数の和:3183

約数の個数: 24

約数和(自身を含む): 33183488

約数和(自身を除く): 13281725

約数列:

[1, 3, 7, 9, 21, 63, 103, 309, 721, 927, 2163, 3067, 6489, 9201, 21469, 27603, 64407, 193221, 315901, 947703, 2211307, 2843109, 6633921, 19901763]

約数ペア:

[(1, 19901763), (3, 6633921), (7, 2843109), (9, 2211307), (21, 947703), (63, 315901), (103, 193221), (309, 64407), (721, 27603), (927, 21469), (2163, 9201), (3067, 6489)]