18190791

素因数分解:

$3^3\times {\mathrm{37}}^1\times {\mathrm{131}}^1\times {\mathrm{139}}^1$

素因数の和:316

約数の個数: 32

約数和(自身を含む): 28089600

約数和(自身を除く): 9898809

約数列:

[1, 3, 9, 27, 37, 111, 131, 139, 333, 393, 417, 999, 1179, 1251, 3537, 3753, 4847, 5143, 14541, 15429, 18209, 43623, 46287, 54627, 130869, 138861, 163881, 491643, 673733, 2021199, 6063597, 18190791]

約数ペア:

[(1, 18190791), (3, 6063597), (9, 2021199), (27, 673733), (37, 491643), (111, 163881), (131, 138861), (139, 130869), (333, 54627), (393, 46287), (417, 43623), (999, 18209), (1179, 15429), (1251, 14541), (3537, 5143), (3753, 4847)]