81127240

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{101}}^1\times {\mathrm{467}}^1$

素因数の和:622

約数の個数: 64

約数和(自身を含む): 189034560

約数和(自身を除く): 107907320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 101, 172, 202, 215, 344, 404, 430, 467, 505, 808, 860, 934, 1010, 1720, 1868, 2020, 2335, 3736, 4040, 4343, 4670, 8686, 9340, 17372, 18680, 20081, 21715, 34744, 40162, 43430, 47167, 80324, 86860, 94334, 100405, 160648, 173720, 188668, 200810, 235835, 377336, 401620, 471670, 803240, 943340, 1886680, 2028181, 4056362, 8112724, 10140905, 16225448, 20281810, 40563620, 81127240]

約数ペア:

[(1, 81127240), (2, 40563620), (4, 20281810), (5, 16225448), (8, 10140905), (10, 8112724), (20, 4056362), (40, 2028181), (43, 1886680), (86, 943340), (101, 803240), (172, 471670), (202, 401620), (215, 377336), (344, 235835), (404, 200810), (430, 188668), (467, 173720), (505, 160648), (808, 100405), (860, 94334), (934, 86860), (1010, 80324), (1720, 47167), (1868, 43430), (2020, 40162), (2335, 34744), (3736, 21715), (4040, 20081), (4343, 18680), (4670, 17372), (8686, 9340)]