19856291

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{179}}^1$

素因数の和:275

約数の個数: 32

約数和(自身を含む): 26127360

約数和(自身を除く): 6271069

約数列:

[1, 7, 13, 23, 53, 91, 161, 179, 299, 371, 689, 1219, 1253, 2093, 2327, 4117, 4823, 8533, 9487, 15847, 16289, 28819, 53521, 66409, 110929, 123331, 218201, 374647, 863317, 1527407, 2836613, 19856291]

約数ペア:

[(1, 19856291), (7, 2836613), (13, 1527407), (23, 863317), (53, 374647), (91, 218201), (161, 123331), (179, 110929), (299, 66409), (371, 53521), (689, 28819), (1219, 16289), (1253, 15847), (2093, 9487), (2327, 8533), (4117, 4823)]