211177145

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{991}}^1$

素因数の和:1145

約数の個数: 32

約数和(自身を含む): 282839040

約数和(自身を除く): 71661895

約数列:

[1, 5, 17, 23, 85, 109, 115, 391, 545, 991, 1853, 1955, 2507, 4955, 9265, 12535, 16847, 22793, 42619, 84235, 108019, 113965, 213095, 387481, 540095, 1836323, 1937405, 2484437, 9181615, 12422185, 42235429, 211177145]

約数ペア:

[(1, 211177145), (5, 42235429), (17, 12422185), (23, 9181615), (85, 2484437), (109, 1937405), (115, 1836323), (391, 540095), (545, 387481), (991, 213095), (1853, 113965), (1955, 108019), (2507, 84235), (4955, 42619), (9265, 22793), (12535, 16847)]