28686519

素因数分解:

$3^2\times {\mathrm{67}}^1\times {\mathrm{113}}^1\times {\mathrm{421}}^1$

素因数の和:607

約数の個数: 24

約数和(自身を含む): 42527472

約数和(自身を除く): 13840953

約数列:

[1, 3, 9, 67, 113, 201, 339, 421, 603, 1017, 1263, 3789, 7571, 22713, 28207, 47573, 68139, 84621, 142719, 253863, 428157, 3187391, 9562173, 28686519]

約数ペア:

[(1, 28686519), (3, 9562173), (9, 3187391), (67, 428157), (113, 253863), (201, 142719), (339, 84621), (421, 68139), (603, 47573), (1017, 28207), (1263, 22713), (3789, 7571)]