21819755

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{11161}}^1$

素因数の和:11206

約数の個数: 16

約数和(自身を含む): 28931904

約数和(自身を除く): 7112149

約数列:

[1, 5, 17, 23, 85, 115, 391, 1955, 11161, 55805, 189737, 256703, 948685, 1283515, 4363951, 21819755]

約数ペア:

[(1, 21819755), (5, 4363951), (17, 1283515), (23, 948685), (85, 256703), (115, 189737), (391, 55805), (1955, 11161)]