131836160

素因数分解:

$2^8\times 5^1\times {\mathrm{127}}^1\times {\mathrm{811}}^1$

素因数の和:959

約数の個数: 72

約数和(自身を含む): 318667776

約数和(自身を除く): 186831616

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 127, 128, 160, 254, 256, 320, 508, 635, 640, 811, 1016, 1270, 1280, 1622, 2032, 2540, 3244, 4055, 4064, 5080, 6488, 8110, 8128, 10160, 12976, 16220, 16256, 20320, 25952, 32440, 32512, 40640, 51904, 64880, 81280, 102997, 103808, 129760, 162560, 205994, 207616, 259520, 411988, 514985, 519040, 823976, 1029970, 1038080, 1647952, 2059940, 3295904, 4119880, 6591808, 8239760, 13183616, 16479520, 26367232, 32959040, 65918080, 131836160]

約数ペア:

[(1, 131836160), (2, 65918080), (4, 32959040), (5, 26367232), (8, 16479520), (10, 13183616), (16, 8239760), (20, 6591808), (32, 4119880), (40, 3295904), (64, 2059940), (80, 1647952), (127, 1038080), (128, 1029970), (160, 823976), (254, 519040), (256, 514985), (320, 411988), (508, 259520), (635, 207616), (640, 205994), (811, 162560), (1016, 129760), (1270, 103808), (1280, 102997), (1622, 81280), (2032, 64880), (2540, 51904), (3244, 40640), (4055, 32512), (4064, 32440), (5080, 25952), (6488, 20320), (8110, 16256), (8128, 16220), (10160, 12976)]