217811495

素因数分解:

$5^1\times {\mathrm{11}}^3\times {\mathrm{23}}^1\times {\mathrm{1423}}^1$

素因数の和:1484

約数の個数: 32

約数和(自身を含む): 300201984

約数和(自身を除く): 82390489

約数列:

[1, 5, 11, 23, 55, 115, 121, 253, 605, 1265, 1331, 1423, 2783, 6655, 7115, 13915, 15653, 30613, 32729, 78265, 153065, 163645, 172183, 360019, 860915, 1800095, 1894013, 3960209, 9470065, 19801045, 43562299, 217811495]

約数ペア:

[(1, 217811495), (5, 43562299), (11, 19801045), (23, 9470065), (55, 3960209), (115, 1894013), (121, 1800095), (253, 860915), (605, 360019), (1265, 172183), (1331, 163645), (1423, 153065), (2783, 78265), (6655, 32729), (7115, 30613), (13915, 15653)]