201968739

素因数分解:

$3^2\times 7^2\times {\mathrm{457979}}^1$

素因数の和:457999

約数の個数: 18

約数和(自身を含む): 339363180

約数和(自身を除く): 137394441

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 457979, 1373937, 3205853, 4121811, 9617559, 22440971, 28852677, 67322913, 201968739]

約数ペア:

[(1, 201968739), (3, 67322913), (7, 28852677), (9, 22440971), (21, 9617559), (49, 4121811), (63, 3205853), (147, 1373937), (441, 457979)]