21570297905

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{151}}^1\times {\mathrm{51109}}^1$

素因数の和:51321

約数の個数: 32

約数和(自身を含む): 28713189120

約数和(自身を除く): 7142891215

約数列:

[1, 5, 13, 43, 65, 151, 215, 559, 755, 1963, 2795, 6493, 9815, 32465, 51109, 84409, 255545, 422045, 664417, 2197687, 3322085, 7717459, 10988435, 28569931, 38587295, 100326967, 142849655, 331850737, 501634835, 1659253685, 4314059581, 21570297905]

約数ペア:

[(1, 21570297905), (5, 4314059581), (13, 1659253685), (43, 501634835), (65, 331850737), (151, 142849655), (215, 100326967), (559, 38587295), (755, 28569931), (1963, 10988435), (2795, 7717459), (6493, 3322085), (9815, 2197687), (32465, 664417), (51109, 422045), (84409, 255545)]