20539040

素因数分解:

$2^5\times 5^1\times {\mathrm{137}}^1\times {\mathrm{937}}^1$

素因数の和:1089

約数の個数: 48

約数和(自身を含む): 48929832

約数和(自身を除く): 28390792

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 137, 160, 274, 548, 685, 937, 1096, 1370, 1874, 2192, 2740, 3748, 4384, 4685, 5480, 7496, 9370, 10960, 14992, 18740, 21920, 29984, 37480, 74960, 128369, 149920, 256738, 513476, 641845, 1026952, 1283690, 2053904, 2567380, 4107808, 5134760, 10269520, 20539040]

約数ペア:

[(1, 20539040), (2, 10269520), (4, 5134760), (5, 4107808), (8, 2567380), (10, 2053904), (16, 1283690), (20, 1026952), (32, 641845), (40, 513476), (80, 256738), (137, 149920), (160, 128369), (274, 74960), (548, 37480), (685, 29984), (937, 21920), (1096, 18740), (1370, 14992), (1874, 10960), (2192, 9370), (2740, 7496), (3748, 5480), (4384, 4685)]