28987275

素因数分解:

$3^1\times 5^2\times {\mathrm{523}}^1\times {\mathrm{739}}^1$

素因数の和:1275

約数の個数: 24

約数和(自身を含む): 48082240

約数和(自身を除く): 19094965

約数列:

[1, 3, 5, 15, 25, 75, 523, 739, 1569, 2217, 2615, 3695, 7845, 11085, 13075, 18475, 39225, 55425, 386497, 1159491, 1932485, 5797455, 9662425, 28987275]

約数ペア:

[(1, 28987275), (3, 9662425), (5, 5797455), (15, 1932485), (25, 1159491), (75, 386497), (523, 55425), (739, 39225), (1569, 18475), (2217, 13075), (2615, 11085), (3695, 7845)]