18858891

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{131}}^1\times {\mathrm{1021}}^1$

素因数の和:1202

約数の個数: 16

約数和(自身を含む): 25901568

約数和(自身を除く): 7042677

約数列:

[1, 3, 47, 131, 141, 393, 1021, 3063, 6157, 18471, 47987, 133751, 143961, 401253, 6286297, 18858891]

約数ペア:

[(1, 18858891), (3, 6286297), (47, 401253), (131, 143961), (141, 133751), (393, 47987), (1021, 18471), (3063, 6157)]