128540209

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{331}}^1\times {\mathrm{1913}}^1$

素因数の和:2280

約数の個数: 16

約数和(自身を含む): 152507520

約数和(自身を除く): 23967311

約数列:

[1, 7, 29, 203, 331, 1913, 2317, 9599, 13391, 55477, 67193, 388339, 633203, 4432421, 18362887, 128540209]

約数ペア:

[(1, 128540209), (7, 18362887), (29, 4432421), (203, 633203), (331, 388339), (1913, 67193), (2317, 55477), (9599, 13391)]