19399985

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{12163}}^1$

素因数の和:12208

約数の個数: 16

約数和(自身を含む): 26274240

約数和(自身を除く): 6874255

約数列:

[1, 5, 11, 29, 55, 145, 319, 1595, 12163, 60815, 133793, 352727, 668965, 1763635, 3879997, 19399985]

約数ペア:

[(1, 19399985), (5, 3879997), (11, 1763635), (29, 668965), (55, 352727), (145, 133793), (319, 60815), (1595, 12163)]