128405199

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{293}}^1\times {\mathrm{661}}^1$

素因数の和:987

約数の個数: 32

約数和(自身を含む): 196185024

約数和(自身を除く): 67779825

約数列:

[1, 3, 13, 17, 39, 51, 221, 293, 661, 663, 879, 1983, 3809, 4981, 8593, 11237, 11427, 14943, 25779, 33711, 64753, 146081, 193673, 194259, 438243, 581019, 2517749, 3292441, 7553247, 9877323, 42801733, 128405199]

約数ペア:

[(1, 128405199), (3, 42801733), (13, 9877323), (17, 7553247), (39, 3292441), (51, 2517749), (221, 581019), (293, 438243), (661, 194259), (663, 193673), (879, 146081), (1983, 64753), (3809, 33711), (4981, 25779), (8593, 14943), (11237, 11427)]