19810503

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{1451}}^1$

素因数の和:1535

約数の個数: 24

約数和(自身を含む): 30126096

約数和(自身を除く): 10315593

約数列:

[1, 3, 9, 37, 41, 111, 123, 333, 369, 1451, 1517, 4353, 4551, 13059, 13653, 53687, 59491, 161061, 178473, 483183, 535419, 2201167, 6603501, 19810503]

約数ペア:

[(1, 19810503), (3, 6603501), (9, 2201167), (37, 535419), (41, 483183), (111, 178473), (123, 161061), (333, 59491), (369, 53687), (1451, 13653), (1517, 13059), (4353, 4551)]