81824965

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{643}}^1\times {\mathrm{821}}^1$

素因数の和:1500

約数の個数: 16

約数和(自身を含む): 101638656

約数和(自身を除く): 19813691

約数列:

[1, 5, 31, 155, 643, 821, 3215, 4105, 19933, 25451, 99665, 127255, 527903, 2639515, 16364993, 81824965]

約数ペア:

[(1, 81824965), (5, 16364993), (31, 2639515), (155, 527903), (643, 127255), (821, 99665), (3215, 25451), (4105, 19933)]