19926809

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{2029}}^1$

素因数の和:2120

約数の個数: 16

約数和(自身を含む): 24165120

約数和(自身を除く): 4238311

約数列:

[1, 7, 23, 61, 161, 427, 1403, 2029, 9821, 14203, 46667, 123769, 326669, 866383, 2846687, 19926809]

約数ペア:

[(1, 19926809), (7, 2846687), (23, 866383), (61, 326669), (161, 123769), (427, 46667), (1403, 14203), (2029, 9821)]