81760217

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{7639}}^1$

素因数の和:7796

約数の個数: 16

約数和(自身を含む): 102681600

約数和(自身を除く): 20921383

約数列:

[1, 7, 11, 77, 139, 973, 1529, 7639, 10703, 53473, 84029, 588203, 1061821, 7432747, 11680031, 81760217]

約数ペア:

[(1, 81760217), (7, 11680031), (11, 7432747), (77, 1061821), (139, 588203), (973, 84029), (1529, 53473), (7639, 10703)]