28920815

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{6829}}^1$

素因数の和:6863

約数の個数: 24

約数和(自身を含む): 43602720

約数和(自身を除く): 14681905

約数列:

[1, 5, 7, 11, 35, 55, 77, 121, 385, 605, 847, 4235, 6829, 34145, 47803, 75119, 239015, 375595, 525833, 826309, 2629165, 4131545, 5784163, 28920815]

約数ペア:

[(1, 28920815), (5, 5784163), (7, 4131545), (11, 2629165), (35, 826309), (55, 525833), (77, 375595), (121, 239015), (385, 75119), (605, 47803), (847, 34145), (4235, 6829)]