12990621

素因数分解:

$3^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{10141}}^1$

素因数の和:10212

約数の個数: 16

約数和(自身を含む): 20121728

約数和(自身を除く): 7131107

約数列:

[1, 3, 7, 21, 61, 183, 427, 1281, 10141, 30423, 70987, 212961, 618601, 1855803, 4330207, 12990621]

約数ペア:

[(1, 12990621), (3, 4330207), (7, 1855803), (21, 618601), (61, 212961), (183, 70987), (427, 30423), (1281, 10141)]