81874438

素因数分解:

$2^1\times {\mathrm{101}}^1\times {\mathrm{409}}^1\times {\mathrm{991}}^1$

素因数の和:1503

約数の個数: 16

約数和(自身を含む): 124456320

約数和(自身を除く): 42581882

約数列:

[1, 2, 101, 202, 409, 818, 991, 1982, 41309, 82618, 100091, 200182, 405319, 810638, 40937219, 81874438]

約数ペア:

[(1, 81874438), (2, 40937219), (101, 810638), (202, 405319), (409, 200182), (818, 100091), (991, 82618), (1982, 41309)]