19878253

素因数分解:

${\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{661}}^1$

素因数の和:768

約数の個数: 16

約数和(自身を含む): 22163760

約数和(自身を除く): 2285507

約数列:

[1, 17, 29, 61, 493, 661, 1037, 1769, 11237, 19169, 30073, 40321, 325873, 685457, 1169309, 19878253]

約数ペア:

[(1, 19878253), (17, 1169309), (29, 685457), (61, 325873), (493, 40321), (661, 30073), (1037, 19169), (1769, 11237)]