21187045

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{227}}^1\times {\mathrm{1697}}^1$

素因数の和:1940

約数の個数: 16

約数和(自身を含む): 27874368

約数和(自身を除く): 6687323

約数列:

[1, 5, 11, 55, 227, 1135, 1697, 2497, 8485, 12485, 18667, 93335, 385219, 1926095, 4237409, 21187045]

約数ペア:

[(1, 21187045), (5, 4237409), (11, 1926095), (55, 385219), (227, 93335), (1135, 18667), (1697, 12485), (2497, 8485)]