19902531

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{9887}}^1$

素因数の和:9962

約数の個数: 16

約数和(自身を含む): 29426688

約数和(自身を除く): 9524157

約数列:

[1, 3, 11, 33, 61, 183, 671, 2013, 9887, 29661, 108757, 326271, 603107, 1809321, 6634177, 19902531]

約数ペア:

[(1, 19902531), (3, 6634177), (11, 1809321), (33, 603107), (61, 326271), (183, 108757), (671, 29661), (2013, 9887)]