20145966

素因数分解:

$2^1\times 3^1\times {\mathrm{19}}^2\times {\mathrm{71}}^1\times {\mathrm{131}}^1$

素因数の和:245

約数の個数: 48

約数和(自身を含む): 43452288

約数和(自身を除く): 23306322

約数列:

[1, 2, 3, 6, 19, 38, 57, 71, 114, 131, 142, 213, 262, 361, 393, 426, 722, 786, 1083, 1349, 2166, 2489, 2698, 4047, 4978, 7467, 8094, 9301, 14934, 18602, 25631, 27903, 47291, 51262, 55806, 76893, 94582, 141873, 153786, 176719, 283746, 353438, 530157, 1060314, 3357661, 6715322, 10072983, 20145966]

約数ペア:

[(1, 20145966), (2, 10072983), (3, 6715322), (6, 3357661), (19, 1060314), (38, 530157), (57, 353438), (71, 283746), (114, 176719), (131, 153786), (142, 141873), (213, 94582), (262, 76893), (361, 55806), (393, 51262), (426, 47291), (722, 27903), (786, 25631), (1083, 18602), (1349, 14934), (2166, 9301), (2489, 8094), (2698, 7467), (4047, 4978)]