19906299

素因数分解:

$3^2\times 7^2\times {\mathrm{45139}}^1$

素因数の和:45159

約数の個数: 18

約数和(自身を含む): 33448740

約数和(自身を除く): 13542441

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 45139, 135417, 315973, 406251, 947919, 2211811, 2843757, 6635433, 19906299]

約数ペア:

[(1, 19906299), (3, 6635433), (7, 2843757), (9, 2211811), (21, 947919), (49, 406251), (63, 315973), (147, 135417), (441, 45139)]