18976791

素因数分解:

$3^1\times {\mathrm{109}}^1\times {\mathrm{131}}^1\times {\mathrm{443}}^1$

素因数の和:686

約数の個数: 16

約数和(自身を含む): 25787520

約数和(自身を除く): 6810729

約数列:

[1, 3, 109, 131, 327, 393, 443, 1329, 14279, 42837, 48287, 58033, 144861, 174099, 6325597, 18976791]

約数ペア:

[(1, 18976791), (3, 6325597), (109, 174099), (131, 144861), (327, 58033), (393, 48287), (443, 42837), (1329, 14279)]