18911210

素因数分解:

$2^1\times 5^1\times {\mathrm{661}}^1\times {\mathrm{2861}}^1$

素因数の和:3529

約数の個数: 16

約数和(自身を含む): 34103592

約数和(自身を除く): 15192382

約数列:

[1, 2, 5, 10, 661, 1322, 2861, 3305, 5722, 6610, 14305, 28610, 1891121, 3782242, 9455605, 18911210]

約数ペア:

[(1, 18911210), (2, 9455605), (5, 3782242), (10, 1891121), (661, 28610), (1322, 14305), (2861, 6610), (3305, 5722)]