18188919

素因数分解:

$3^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{4733}}^1$

素因数の和:4807

約数の個数: 24

約数和(自身を含む): 30524832

約数和(自身を除く): 12335913

約数列:

[1, 3, 7, 9, 21, 61, 63, 183, 427, 549, 1281, 3843, 4733, 14199, 33131, 42597, 99393, 288713, 298179, 866139, 2020991, 2598417, 6062973, 18188919]

約数ペア:

[(1, 18188919), (3, 6062973), (7, 2598417), (9, 2020991), (21, 866139), (61, 298179), (63, 288713), (183, 99393), (427, 42597), (549, 33131), (1281, 14199), (3843, 4733)]