199887721

素因数分解:

${\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{419}}^1\times {\mathrm{1399}}^1$

素因数の和:1860

約数の個数: 16

約数和(自身を含む): 225792000

約数和(自身を除く): 25904279

約数列:

[1, 11, 31, 341, 419, 1399, 4609, 12989, 15389, 43369, 142879, 477059, 586181, 6447991, 18171611, 199887721]

約数ペア:

[(1, 199887721), (11, 18171611), (31, 6447991), (341, 586181), (419, 477059), (1399, 142879), (4609, 43369), (12989, 15389)]