20813151

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{457}}^1$

素因数の和:543

約数の個数: 32

約数和(自身を含む): 31656960

約数和(自身を除く): 10843809

約数列:

[1, 3, 17, 19, 47, 51, 57, 141, 323, 457, 799, 893, 969, 1371, 2397, 2679, 7769, 8683, 15181, 21479, 23307, 26049, 45543, 64437, 147611, 365143, 408101, 442833, 1095429, 1224303, 6937717, 20813151]

約数ペア:

[(1, 20813151), (3, 6937717), (17, 1224303), (19, 1095429), (47, 442833), (51, 408101), (57, 365143), (141, 147611), (323, 64437), (457, 45543), (799, 26049), (893, 23307), (969, 21479), (1371, 15181), (2397, 8683), (2679, 7769)]