19972941

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{107}}^1\times {\mathrm{1447}}^1$

素因数の和:1600

約数の個数: 16

約数和(自身を含む): 27523584

約数和(自身を除く): 7550643

約数列:

[1, 3, 43, 107, 129, 321, 1447, 4341, 4601, 13803, 62221, 154829, 186663, 464487, 6657647, 19972941]

約数ペア:

[(1, 19972941), (3, 6657647), (43, 464487), (107, 186663), (129, 154829), (321, 62221), (1447, 13803), (4341, 4601)]