21671815

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{191}}^1\times {\mathrm{2063}}^1$

素因数の和:2270

約数の個数: 16

約数和(自身を含む): 28532736

約数和(自身を除く): 6860921

約数列:

[1, 5, 11, 55, 191, 955, 2063, 2101, 10315, 10505, 22693, 113465, 394033, 1970165, 4334363, 21671815]

約数ペア:

[(1, 21671815), (5, 4334363), (11, 1970165), (55, 394033), (191, 113465), (955, 22693), (2063, 10505), (2101, 10315)]