21099028

素因数分解:

$2^2\times {\mathrm{37}}^2\times {\mathrm{3853}}^1$

素因数の和:3931

約数の個数: 18

約数和(自身を含む): 37958046

約数和(自身を除く): 16859018

約数列:

[1, 2, 4, 37, 74, 148, 1369, 2738, 3853, 5476, 7706, 15412, 142561, 285122, 570244, 5274757, 10549514, 21099028]

約数ペア:

[(1, 21099028), (2, 10549514), (4, 5274757), (37, 570244), (74, 285122), (148, 142561), (1369, 15412), (2738, 7706), (3853, 5476)]