20102005

素因数分解:

$5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{7459}}^1$

素因数の和:7489

約数の個数: 24

約数和(自身を含む): 30615840

約数和(自身を除く): 10513835

約数列:

[1, 5, 7, 11, 35, 49, 55, 77, 245, 385, 539, 2695, 7459, 37295, 52213, 82049, 261065, 365491, 410245, 574343, 1827455, 2871715, 4020401, 20102005]

約数ペア:

[(1, 20102005), (5, 4020401), (7, 2871715), (11, 1827455), (35, 574343), (49, 410245), (55, 365491), (77, 261065), (245, 82049), (385, 52213), (539, 37295), (2695, 7459)]