257005012

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{107}}^1\times {\mathrm{691}}^1$

素因数の和:892

約数の個数: 48

約数和(自身を含む): 502225920

約数和(自身を除く): 245220908

約数列:

[1, 2, 4, 11, 22, 44, 79, 107, 158, 214, 316, 428, 691, 869, 1177, 1382, 1738, 2354, 2764, 3476, 4708, 7601, 8453, 15202, 16906, 30404, 33812, 54589, 73937, 92983, 109178, 147874, 185966, 218356, 295748, 371932, 600479, 813307, 1200958, 1626614, 2401916, 3253228, 5841023, 11682046, 23364092, 64251253, 128502506, 257005012]

約数ペア:

[(1, 257005012), (2, 128502506), (4, 64251253), (11, 23364092), (22, 11682046), (44, 5841023), (79, 3253228), (107, 2401916), (158, 1626614), (214, 1200958), (316, 813307), (428, 600479), (691, 371932), (869, 295748), (1177, 218356), (1382, 185966), (1738, 147874), (2354, 109178), (2764, 92983), (3476, 73937), (4708, 54589), (7601, 33812), (8453, 30404), (15202, 16906)]