20640435

素因数分解:

$3^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{15461}}^1$

素因数の和:15558

約数の個数: 16

約数和(自身を含む): 33397920

約数和(自身を除く): 12757485

約数列:

[1, 3, 5, 15, 89, 267, 445, 1335, 15461, 46383, 77305, 231915, 1376029, 4128087, 6880145, 20640435]

約数ペア:

[(1, 20640435), (3, 6880145), (5, 4128087), (15, 1376029), (89, 231915), (267, 77305), (445, 46383), (1335, 15461)]