18550161

素因数分解:

$3^3\times 7^1\times {\mathrm{61}}^1\times {\mathrm{1609}}^1$

素因数の和:1686

約数の個数: 32

約数和(自身を含む): 31942400

約数和(自身を除く): 13392239

約数列:

[1, 3, 7, 9, 21, 27, 61, 63, 183, 189, 427, 549, 1281, 1609, 1647, 3843, 4827, 11263, 11529, 14481, 33789, 43443, 98149, 101367, 294447, 304101, 687043, 883341, 2061129, 2650023, 6183387, 18550161]

約数ペア:

[(1, 18550161), (3, 6183387), (7, 2650023), (9, 2061129), (21, 883341), (27, 687043), (61, 304101), (63, 294447), (183, 101367), (189, 98149), (427, 43443), (549, 33789), (1281, 14481), (1609, 11529), (1647, 11263), (3843, 4827)]