281371244

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{457}}^1\times {\mathrm{1999}}^1$

素因数の和:2478

約数の個数: 48

約数和(自身を含む): 615552000

約数和(自身を除く): 334180756

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 308, 457, 914, 1828, 1999, 3199, 3998, 5027, 6398, 7996, 10054, 12796, 13993, 20108, 21989, 27986, 35189, 43978, 55972, 70378, 87956, 140756, 153923, 307846, 615692, 913543, 1827086, 3654172, 6394801, 10048973, 12789602, 20097946, 25579204, 40195892, 70342811, 140685622, 281371244]

約数ペア:

[(1, 281371244), (2, 140685622), (4, 70342811), (7, 40195892), (11, 25579204), (14, 20097946), (22, 12789602), (28, 10048973), (44, 6394801), (77, 3654172), (154, 1827086), (308, 913543), (457, 615692), (914, 307846), (1828, 153923), (1999, 140756), (3199, 87956), (3998, 70378), (5027, 55972), (6398, 43978), (7996, 35189), (10054, 27986), (12796, 21989), (13993, 20108)]