30719920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{4987}}^1$

素因数の和:5018

約数の個数: 80

約数和(自身を含む): 89065728

約数和(自身を除く): 58345808

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 80, 88, 110, 112, 140, 154, 176, 220, 280, 308, 385, 440, 560, 616, 770, 880, 1232, 1540, 3080, 4987, 6160, 9974, 19948, 24935, 34909, 39896, 49870, 54857, 69818, 79792, 99740, 109714, 139636, 174545, 199480, 219428, 274285, 279272, 349090, 383999, 398960, 438856, 548570, 558544, 698180, 767998, 877712, 1097140, 1396360, 1535996, 1919995, 2194280, 2792720, 3071992, 3839990, 4388560, 6143984, 7679980, 15359960, 30719920]

約数ペア:

[(1, 30719920), (2, 15359960), (4, 7679980), (5, 6143984), (7, 4388560), (8, 3839990), (10, 3071992), (11, 2792720), (14, 2194280), (16, 1919995), (20, 1535996), (22, 1396360), (28, 1097140), (35, 877712), (40, 767998), (44, 698180), (55, 558544), (56, 548570), (70, 438856), (77, 398960), (80, 383999), (88, 349090), (110, 279272), (112, 274285), (140, 219428), (154, 199480), (176, 174545), (220, 139636), (280, 109714), (308, 99740), (385, 79792), (440, 69818), (560, 54857), (616, 49870), (770, 39896), (880, 34909), (1232, 24935), (1540, 19948), (3080, 9974), (4987, 6160)]