19906370

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{73}}^1$

素因数の和:195

約数の個数: 64

約数和(自身を含む): 41302656

約数和(自身を除く): 21396286

約数列:

[1, 2, 5, 10, 11, 22, 37, 55, 67, 73, 74, 110, 134, 146, 185, 335, 365, 370, 407, 670, 730, 737, 803, 814, 1474, 1606, 2035, 2479, 2701, 3685, 4015, 4070, 4891, 4958, 5402, 7370, 8030, 9782, 12395, 13505, 24455, 24790, 27010, 27269, 29711, 48910, 53801, 54538, 59422, 107602, 136345, 148555, 180967, 269005, 272690, 297110, 361934, 538010, 904835, 1809670, 1990637, 3981274, 9953185, 19906370]

約数ペア:

[(1, 19906370), (2, 9953185), (5, 3981274), (10, 1990637), (11, 1809670), (22, 904835), (37, 538010), (55, 361934), (67, 297110), (73, 272690), (74, 269005), (110, 180967), (134, 148555), (146, 136345), (185, 107602), (335, 59422), (365, 54538), (370, 53801), (407, 48910), (670, 29711), (730, 27269), (737, 27010), (803, 24790), (814, 24455), (1474, 13505), (1606, 12395), (2035, 9782), (2479, 8030), (2701, 7370), (3685, 5402), (4015, 4958), (4070, 4891)]