19919315

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{127}}^2$

素因数の和:291

約数の個数: 24

約数和(自身を含む): 27311760

約数和(自身を除く): 7392445

約数列:

[1, 5, 13, 19, 65, 95, 127, 247, 635, 1235, 1651, 2413, 8255, 12065, 16129, 31369, 80645, 156845, 209677, 306451, 1048385, 1532255, 3983863, 19919315]

約数ペア:

[(1, 19919315), (5, 3983863), (13, 1532255), (19, 1048385), (65, 306451), (95, 209677), (127, 156845), (247, 80645), (635, 31369), (1235, 16129), (1651, 12065), (2413, 8255)]