28921473

素因数分解:

$3^2\times 7^1\times {\mathrm{103}}^1\times {\mathrm{4457}}^1$

素因数の和:4573

約数の個数: 24

約数和(自身を含む): 48217728

約数和(自身を除く): 19296255

約数列:

[1, 3, 7, 9, 21, 63, 103, 309, 721, 927, 2163, 4457, 6489, 13371, 31199, 40113, 93597, 280791, 459071, 1377213, 3213497, 4131639, 9640491, 28921473]

約数ペア:

[(1, 28921473), (3, 9640491), (7, 4131639), (9, 3213497), (21, 1377213), (63, 459071), (103, 280791), (309, 93597), (721, 40113), (927, 31199), (2163, 13371), (4457, 6489)]