21942800

素因数分解:

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

素因数の和:5016

約数の個数: 60

約数和(自身を含む): 57521616

約数和(自身を除く): 35578816

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 40, 44, 50, 55, 80, 88, 100, 110, 176, 200, 220, 275, 400, 440, 550, 880, 1100, 2200, 4400, 4987, 9974, 19948, 24935, 39896, 49870, 54857, 79792, 99740, 109714, 124675, 199480, 219428, 249350, 274285, 398960, 438856, 498700, 548570, 877712, 997400, 1097140, 1371425, 1994800, 2194280, 2742850, 4388560, 5485700, 10971400, 21942800]

約数ペア:

[(1, 21942800), (2, 10971400), (4, 5485700), (5, 4388560), (8, 2742850), (10, 2194280), (11, 1994800), (16, 1371425), (20, 1097140), (22, 997400), (25, 877712), (40, 548570), (44, 498700), (50, 438856), (55, 398960), (80, 274285), (88, 249350), (100, 219428), (110, 199480), (176, 124675), (200, 109714), (220, 99740), (275, 79792), (400, 54857), (440, 49870), (550, 39896), (880, 24935), (1100, 19948), (2200, 9974), (4400, 4987)]