217907312

素因数分解:

$2^4\times 7^2\times {\mathrm{499}}^1\times {\mathrm{557}}^1$

素因数の和:1078

約数の個数: 60

約数和(自身を含む): 492993000

約数和(自身を除く): 275085688

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 98, 112, 196, 392, 499, 557, 784, 998, 1114, 1996, 2228, 3493, 3899, 3992, 4456, 6986, 7798, 7984, 8912, 13972, 15596, 24451, 27293, 27944, 31192, 48902, 54586, 55888, 62384, 97804, 109172, 195608, 218344, 277943, 391216, 436688, 555886, 1111772, 1945601, 2223544, 3891202, 4447088, 7782404, 13619207, 15564808, 27238414, 31129616, 54476828, 108953656, 217907312]

約数ペア:

[(1, 217907312), (2, 108953656), (4, 54476828), (7, 31129616), (8, 27238414), (14, 15564808), (16, 13619207), (28, 7782404), (49, 4447088), (56, 3891202), (98, 2223544), (112, 1945601), (196, 1111772), (392, 555886), (499, 436688), (557, 391216), (784, 277943), (998, 218344), (1114, 195608), (1996, 109172), (2228, 97804), (3493, 62384), (3899, 55888), (3992, 54586), (4456, 48902), (6986, 31192), (7798, 27944), (7984, 27293), (8912, 24451), (13972, 15596)]