28780213

素因数分解:

$7^1\times {\mathrm{11}}^3\times {\mathrm{3089}}^1$

素因数の和:3129

約数の個数: 16

約数和(自身を含む): 36190080

約数和(自身を除く): 7409867

約数列:

[1, 7, 11, 77, 121, 847, 1331, 3089, 9317, 21623, 33979, 237853, 373769, 2616383, 4111459, 28780213]

約数ペア:

[(1, 28780213), (7, 4111459), (11, 2616383), (77, 373769), (121, 237853), (847, 33979), (1331, 21623), (3089, 9317)]