28728725

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{2939}}^1$

素因数の和:2989

約数の個数: 24

約数和(自身を含む): 39372480

約数和(自身を除く): 10643755

約数列:

[1, 5, 17, 23, 25, 85, 115, 391, 425, 575, 1955, 2939, 9775, 14695, 49963, 67597, 73475, 249815, 337985, 1149149, 1249075, 1689925, 5745745, 28728725]

約数ペア:

[(1, 28728725), (5, 5745745), (17, 1689925), (23, 1249075), (25, 1149149), (85, 337985), (115, 249815), (391, 73475), (425, 67597), (575, 49963), (1955, 14695), (2939, 9775)]