19639895

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{11519}}^1$

素因数の和:11566

約数の個数: 16

約数和(自身を含む): 26542080

約数和(自身を除く): 6902185

約数列:

[1, 5, 11, 31, 55, 155, 341, 1705, 11519, 57595, 126709, 357089, 633545, 1785445, 3927979, 19639895]

約数ペア:

[(1, 19639895), (5, 3927979), (11, 1785445), (31, 633545), (55, 357089), (155, 126709), (341, 57595), (1705, 11519)]