20190987

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{103}}^1\times {\mathrm{947}}^1$

素因数の和:1079

約数の個数: 24

約数和(自身を含む): 30760704

約数和(自身を除く): 10569717

約数列:

[1, 3, 9, 23, 69, 103, 207, 309, 927, 947, 2369, 2841, 7107, 8523, 21321, 21781, 65343, 97541, 196029, 292623, 877869, 2243443, 6730329, 20190987]

約数ペア:

[(1, 20190987), (3, 6730329), (9, 2243443), (23, 877869), (69, 292623), (103, 196029), (207, 97541), (309, 65343), (927, 21781), (947, 21321), (2369, 8523), (2841, 7107)]