21616500140

素因数分解:

$2^2\times 5^1\times {\mathrm{7789}}^1\times {\mathrm{138763}}^1$

素因数の和:146561

約数の個数: 24

約数和(自身を含む): 45400805520

約数和(自身を除く): 23784305380

約数列:

[1, 2, 4, 5, 10, 20, 7789, 15578, 31156, 38945, 77890, 138763, 155780, 277526, 555052, 693815, 1387630, 2775260, 1080825007, 2161650014, 4323300028, 5404125035, 10808250070, 21616500140]

約数ペア:

[(1, 21616500140), (2, 10808250070), (4, 5404125035), (5, 4323300028), (10, 2161650014), (20, 1080825007), (7789, 2775260), (15578, 1387630), (31156, 693815), (38945, 555052), (77890, 277526), (138763, 155780)]