128375109

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{421}}^1\times {\mathrm{1993}}^1$

素因数の和:2437

約数の個数: 24

約数和(自身を含む): 196903512

約数和(自身を除く): 68528403

約数列:

[1, 3, 9, 17, 51, 153, 421, 1263, 1993, 3789, 5979, 7157, 17937, 21471, 33881, 64413, 101643, 304929, 839053, 2517159, 7551477, 14263901, 42791703, 128375109]

約数ペア:

[(1, 128375109), (3, 42791703), (9, 14263901), (17, 7551477), (51, 2517159), (153, 839053), (421, 304929), (1263, 101643), (1993, 64413), (3789, 33881), (5979, 21471), (7157, 17937)]