19667921

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{9397}}^1$

素因数の和:9440

約数の個数: 16

約数和(自身を含む): 25261824

約数和(自身を除く): 5593903

約数列:

[1, 7, 13, 23, 91, 161, 299, 2093, 9397, 65779, 122161, 216131, 855127, 1512917, 2809703, 19667921]

約数ペア:

[(1, 19667921), (7, 2809703), (13, 1512917), (23, 855127), (91, 216131), (161, 122161), (299, 65779), (2093, 9397)]