19865169

素因数分解:

$3^4\times {\mathrm{23}}^1\times {\mathrm{10663}}^1$

素因数の和:10698

約数の個数: 20

約数和(自身を含む): 30968256

約数和(自身を除く): 11103087

約数列:

[1, 3, 9, 23, 27, 69, 81, 207, 621, 1863, 10663, 31989, 95967, 245249, 287901, 735747, 863703, 2207241, 6621723, 19865169]

約数ペア:

[(1, 19865169), (3, 6621723), (9, 2207241), (23, 863703), (27, 735747), (69, 287901), (81, 245249), (207, 95967), (621, 31989), (1863, 10663)]