19926907

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1171}}^1$

素因数の和:1219

約数の個数: 32

約数和(自身を含む): 28353024

約数和(自身を除く): 8426117

約数列:

[1, 7, 11, 13, 17, 77, 91, 119, 143, 187, 221, 1001, 1171, 1309, 1547, 2431, 8197, 12881, 15223, 17017, 19907, 90167, 106561, 139349, 167453, 218977, 258791, 1172171, 1532839, 1811537, 2846701, 19926907]

約数ペア:

[(1, 19926907), (7, 2846701), (11, 1811537), (13, 1532839), (17, 1172171), (77, 258791), (91, 218977), (119, 167453), (143, 139349), (187, 106561), (221, 90167), (1001, 19907), (1171, 17017), (1309, 15223), (1547, 12881), (2431, 8197)]