51990239

素因数分解:

$7^1\times {\mathrm{61}}^1\times {\mathrm{313}}^1\times {\mathrm{389}}^1$

素因数の和:770

約数の個数: 16

約数和(自身を含む): 60740160

約数和(自身を除く): 8749921

約数列:

[1, 7, 61, 313, 389, 427, 2191, 2723, 19093, 23729, 121757, 133651, 166103, 852299, 7427177, 51990239]

約数ペア:

[(1, 51990239), (7, 7427177), (61, 852299), (313, 166103), (389, 133651), (427, 121757), (2191, 23729), (2723, 19093)]