28781665

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{113}}^1\times {\mathrm{421}}^1$

素因数の和:561

約数の個数: 24

約数和(自身を含む): 38390184

約数和(自身を除く): 9608519

約数列:

[1, 5, 11, 55, 113, 121, 421, 565, 605, 1243, 2105, 4631, 6215, 13673, 23155, 47573, 50941, 68365, 237865, 254705, 523303, 2616515, 5756333, 28781665]

約数ペア:

[(1, 28781665), (5, 5756333), (11, 2616515), (55, 523303), (113, 254705), (121, 237865), (421, 68365), (565, 50941), (605, 47573), (1243, 23155), (2105, 13673), (4631, 6215)]