21759265

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{103}}^1\times {\mathrm{167}}^1$

素因数の和:309

約数の個数: 32

約数和(自身を含む): 30191616

約数和(自身を除く): 8432351

約数列:

[1, 5, 11, 23, 55, 103, 115, 167, 253, 515, 835, 1133, 1265, 1837, 2369, 3841, 5665, 9185, 11845, 17201, 19205, 26059, 42251, 86005, 130295, 189211, 211255, 395623, 946055, 1978115, 4351853, 21759265]

約数ペア:

[(1, 21759265), (5, 4351853), (11, 1978115), (23, 946055), (55, 395623), (103, 211255), (115, 189211), (167, 130295), (253, 86005), (515, 42251), (835, 26059), (1133, 19205), (1265, 17201), (1837, 11845), (2369, 9185), (3841, 5665)]