28715225

素因数分解:

$5^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{2131}}^1$

素因数の和:2166

約数の個数: 36

約数和(自身を含む): 45206928

約数和(自身を除く): 16491703

約数列:

[1, 5, 7, 11, 25, 35, 49, 55, 77, 175, 245, 275, 385, 539, 1225, 1925, 2131, 2695, 10655, 13475, 14917, 23441, 53275, 74585, 104419, 117205, 164087, 372925, 522095, 586025, 820435, 1148609, 2610475, 4102175, 5743045, 28715225]

約数ペア:

[(1, 28715225), (5, 5743045), (7, 4102175), (11, 2610475), (25, 1148609), (35, 820435), (49, 586025), (55, 522095), (77, 372925), (175, 164087), (245, 117205), (275, 104419), (385, 74585), (539, 53275), (1225, 23441), (1925, 14917), (2131, 13475), (2695, 10655)]