281639660

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{18077}}^1$

素因数の和:18146

約数の個数: 48

約数和(自身を含む): 637791840

約数和(自身を除く): 356152180

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 41, 76, 82, 95, 164, 190, 205, 380, 410, 779, 820, 1558, 3116, 3895, 7790, 15580, 18077, 36154, 72308, 90385, 180770, 343463, 361540, 686926, 741157, 1373852, 1482314, 1717315, 2964628, 3434630, 3705785, 6869260, 7411570, 14081983, 14823140, 28163966, 56327932, 70409915, 140819830, 281639660]

約数ペア:

[(1, 281639660), (2, 140819830), (4, 70409915), (5, 56327932), (10, 28163966), (19, 14823140), (20, 14081983), (38, 7411570), (41, 6869260), (76, 3705785), (82, 3434630), (95, 2964628), (164, 1717315), (190, 1482314), (205, 1373852), (380, 741157), (410, 686926), (779, 361540), (820, 343463), (1558, 180770), (3116, 90385), (3895, 72308), (7790, 36154), (15580, 18077)]