21274784

素因数分解:

$2^5\times {\mathrm{139}}^1\times {\mathrm{4783}}^1$

素因数の和:4932

約数の個数: 24

約数和(自身を含む): 42194880

約数和(自身を除く): 20920096

約数列:

[1, 2, 4, 8, 16, 32, 139, 278, 556, 1112, 2224, 4448, 4783, 9566, 19132, 38264, 76528, 153056, 664837, 1329674, 2659348, 5318696, 10637392, 21274784]

約数ペア:

[(1, 21274784), (2, 10637392), (4, 5318696), (8, 2659348), (16, 1329674), (32, 664837), (139, 153056), (278, 76528), (556, 38264), (1112, 19132), (2224, 9566), (4448, 4783)]