20297571

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{151}}^1\times {\mathrm{173}}^1$

素因数の和:371

約数の個数: 32

約数和(自身を含む): 32160768

約数和(自身を除く): 11863197

約数列:

[1, 3, 7, 21, 37, 111, 151, 173, 259, 453, 519, 777, 1057, 1211, 3171, 3633, 5587, 6401, 16761, 19203, 26123, 39109, 44807, 78369, 117327, 134421, 182861, 548583, 966551, 2899653, 6765857, 20297571]

約数ペア:

[(1, 20297571), (3, 6765857), (7, 2899653), (21, 966551), (37, 548583), (111, 182861), (151, 134421), (173, 117327), (259, 78369), (453, 44807), (519, 39109), (777, 26123), (1057, 19203), (1211, 16761), (3171, 6401), (3633, 5587)]