21180335

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{3533}}^1$

素因数の和:3658

約数の個数: 16

約数和(自身を含む): 27989280

約数和(自身を除く): 6808945

約数列:

[1, 5, 11, 55, 109, 545, 1199, 3533, 5995, 17665, 38863, 194315, 385097, 1925485, 4236067, 21180335]

約数ペア:

[(1, 21180335), (5, 4236067), (11, 1925485), (55, 385097), (109, 194315), (545, 38863), (1199, 17665), (3533, 5995)]