18739280

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{307}}^1$

素因数の和:436

約数の個数: 80

約数和(自身を含む): 50413440

約数和(自身を除く): 31674160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 109, 112, 140, 218, 280, 307, 436, 545, 560, 614, 763, 872, 1090, 1228, 1526, 1535, 1744, 2149, 2180, 2456, 3052, 3070, 3815, 4298, 4360, 4912, 6104, 6140, 7630, 8596, 8720, 10745, 12208, 12280, 15260, 17192, 21490, 24560, 30520, 33463, 34384, 42980, 61040, 66926, 85960, 133852, 167315, 171920, 234241, 267704, 334630, 468482, 535408, 669260, 936964, 1171205, 1338520, 1873928, 2342410, 2677040, 3747856, 4684820, 9369640, 18739280]

約数ペア:

[(1, 18739280), (2, 9369640), (4, 4684820), (5, 3747856), (7, 2677040), (8, 2342410), (10, 1873928), (14, 1338520), (16, 1171205), (20, 936964), (28, 669260), (35, 535408), (40, 468482), (56, 334630), (70, 267704), (80, 234241), (109, 171920), (112, 167315), (140, 133852), (218, 85960), (280, 66926), (307, 61040), (436, 42980), (545, 34384), (560, 33463), (614, 30520), (763, 24560), (872, 21490), (1090, 17192), (1228, 15260), (1526, 12280), (1535, 12208), (1744, 10745), (2149, 8720), (2180, 8596), (2456, 7630), (3052, 6140), (3070, 6104), (3815, 4912), (4298, 4360)]