257878522

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{3469}}^1$

素因数の和:3622

約数の個数: 32

約数和(自身を含む): 439718400

約数和(自身を除く): 181839878

約数列:

[1, 2, 11, 22, 31, 62, 109, 218, 341, 682, 1199, 2398, 3379, 3469, 6758, 6938, 37169, 38159, 74338, 76318, 107539, 215078, 378121, 756242, 1182929, 2365858, 4159331, 8318662, 11721751, 23443502, 128939261, 257878522]

約数ペア:

[(1, 257878522), (2, 128939261), (11, 23443502), (22, 11721751), (31, 8318662), (62, 4159331), (109, 2365858), (218, 1182929), (341, 756242), (682, 378121), (1199, 215078), (2398, 107539), (3379, 76318), (3469, 74338), (6758, 38159), (6938, 37169)]