257994506

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^2\times {\mathrm{21757}}^1$

素因数の和:21795

約数の個数: 36

約数和(自身を含む): 494842194

約数和(自身を除く): 236847688

約数列:

[1, 2, 7, 11, 14, 22, 49, 77, 98, 121, 154, 242, 539, 847, 1078, 1694, 5929, 11858, 21757, 43514, 152299, 239327, 304598, 478654, 1066093, 1675289, 2132186, 2632597, 3350578, 5265194, 11727023, 18428179, 23454046, 36856358, 128997253, 257994506]

約数ペア:

[(1, 257994506), (2, 128997253), (7, 36856358), (11, 23454046), (14, 18428179), (22, 11727023), (49, 5265194), (77, 3350578), (98, 2632597), (121, 2132186), (154, 1675289), (242, 1066093), (539, 478654), (847, 304598), (1078, 239327), (1694, 152299), (5929, 43514), (11858, 21757)]