18879561

素因数分解:

$3^4\times {\mathrm{61}}^1\times {\mathrm{3821}}^1$

素因数の和:3894

約数の個数: 20

約数和(自身を含む): 28672644

約数和(自身を除く): 9793083

約数列:

[1, 3, 9, 27, 61, 81, 183, 549, 1647, 3821, 4941, 11463, 34389, 103167, 233081, 309501, 699243, 2097729, 6293187, 18879561]

約数ペア:

[(1, 18879561), (3, 6293187), (9, 2097729), (27, 699243), (61, 309501), (81, 233081), (183, 103167), (549, 34389), (1647, 11463), (3821, 4941)]