21801655

素因数分解:

$5^1\times {\mathrm{47}}^1\times {\mathrm{113}}^1\times {\mathrm{821}}^1$

素因数の和:986

約数の個数: 16

約数和(自身を含む): 26987904

約数和(自身を除く): 5186249

約数列:

[1, 5, 47, 113, 235, 565, 821, 4105, 5311, 26555, 38587, 92773, 192935, 463865, 4360331, 21801655]

約数ペア:

[(1, 21801655), (5, 4360331), (47, 463865), (113, 192935), (235, 92773), (565, 38587), (821, 26555), (4105, 5311)]