19881400

素因数分解:

$2^3\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{1291}}^1$

素因数の和:1325

約数の個数: 96

約数和(自身を含む): 57674880

約数和(自身を除く): 37793480

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 25, 28, 35, 40, 44, 50, 55, 56, 70, 77, 88, 100, 110, 140, 154, 175, 200, 220, 275, 280, 308, 350, 385, 440, 550, 616, 700, 770, 1100, 1291, 1400, 1540, 1925, 2200, 2582, 3080, 3850, 5164, 6455, 7700, 9037, 10328, 12910, 14201, 15400, 18074, 25820, 28402, 32275, 36148, 45185, 51640, 56804, 64550, 71005, 72296, 90370, 99407, 113608, 129100, 142010, 180740, 198814, 225925, 258200, 284020, 355025, 361480, 397628, 451850, 497035, 568040, 710050, 795256, 903700, 994070, 1420100, 1807400, 1988140, 2485175, 2840200, 3976280, 4970350, 9940700, 19881400]

約数ペア:

[(1, 19881400), (2, 9940700), (4, 4970350), (5, 3976280), (7, 2840200), (8, 2485175), (10, 1988140), (11, 1807400), (14, 1420100), (20, 994070), (22, 903700), (25, 795256), (28, 710050), (35, 568040), (40, 497035), (44, 451850), (50, 397628), (55, 361480), (56, 355025), (70, 284020), (77, 258200), (88, 225925), (100, 198814), (110, 180740), (140, 142010), (154, 129100), (175, 113608), (200, 99407), (220, 90370), (275, 72296), (280, 71005), (308, 64550), (350, 56804), (385, 51640), (440, 45185), (550, 36148), (616, 32275), (700, 28402), (770, 25820), (1100, 18074), (1291, 15400), (1400, 14201), (1540, 12910), (1925, 10328), (2200, 9037), (2582, 7700), (3080, 6455), (3850, 5164)]