19988493

素因数分解:

$3^1\times 7^1\times {\mathrm{313}}^1\times {\mathrm{3041}}^1$

素因数の和:3364

約数の個数: 16

約数和(自身を含む): 30566016

約数和(自身を除く): 10577523

約数列:

[1, 3, 7, 21, 313, 939, 2191, 3041, 6573, 9123, 21287, 63861, 951833, 2855499, 6662831, 19988493]

約数ペア:

[(1, 19988493), (3, 6662831), (7, 2855499), (21, 951833), (313, 63861), (939, 21287), (2191, 9123), (3041, 6573)]