1820007

素因数分解:

$3^2\times 7^2\times {\mathrm{4127}}^1$

素因数の和:4147

約数の個数: 18

約数和(自身を含む): 3058848

約数和(自身を除く): 1238841

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 4127, 12381, 28889, 37143, 86667, 202223, 260001, 606669, 1820007]

約数ペア:

[(1, 1820007), (3, 606669), (7, 260001), (9, 202223), (21, 86667), (49, 37143), (63, 28889), (147, 12381), (441, 4127)]