20765438080

素因数分解:

$2^7\times 5^1\times {\mathrm{6899}}^1\times {\mathrm{4703}}^1$

素因数の和:11621

約数の個数: 64

約数和(自身を含む): 49660128000

約数和(自身を除く): 28894689920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 4703, 6899, 9406, 13798, 18812, 23515, 27596, 34495, 37624, 47030, 55192, 68990, 75248, 94060, 110384, 137980, 150496, 188120, 220768, 275960, 300992, 376240, 441536, 551920, 601984, 752480, 883072, 1103840, 1504960, 2207680, 3009920, 4415360, 32445997, 64891994, 129783988, 162229985, 259567976, 324459970, 519135952, 648919940, 1038271904, 1297839880, 2076543808, 2595679760, 4153087616, 5191359520, 10382719040, 20765438080]

約数ペア:

[(1, 20765438080), (2, 10382719040), (4, 5191359520), (5, 4153087616), (8, 2595679760), (10, 2076543808), (16, 1297839880), (20, 1038271904), (32, 648919940), (40, 519135952), (64, 324459970), (80, 259567976), (128, 162229985), (160, 129783988), (320, 64891994), (640, 32445997), (4703, 4415360), (6899, 3009920), (9406, 2207680), (13798, 1504960), (18812, 1103840), (23515, 883072), (27596, 752480), (34495, 601984), (37624, 551920), (47030, 441536), (55192, 376240), (68990, 300992), (75248, 275960), (94060, 220768), (110384, 188120), (137980, 150496)]