638529339

素因数分解:

$3^1\times 7^2\times {\mathrm{311}}^1\times {\mathrm{13967}}^1$

素因数の和:14295

約数の個数: 24

約数和(自身を含む): 993627648

約数和(自身を除く): 355098309

約数列:

[1, 3, 7, 21, 49, 147, 311, 933, 2177, 6531, 13967, 15239, 41901, 45717, 97769, 293307, 684383, 2053149, 4343737, 13031211, 30406159, 91218477, 212843113, 638529339]

約数ペア:

[(1, 638529339), (3, 212843113), (7, 91218477), (21, 30406159), (49, 13031211), (147, 4343737), (311, 2053149), (933, 684383), (2177, 293307), (6531, 97769), (13967, 45717), (15239, 41901)]