21290836

素因数分解:

$2^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{20551}}^1$

素因数の和:20599

約数の個数: 24

約数和(自身を含む): 43734656

約数和(自身を除く): 22443820

約数列:

[1, 2, 4, 7, 14, 28, 37, 74, 148, 259, 518, 1036, 20551, 41102, 82204, 143857, 287714, 575428, 760387, 1520774, 3041548, 5322709, 10645418, 21290836]

約数ペア:

[(1, 21290836), (2, 10645418), (4, 5322709), (7, 3041548), (14, 1520774), (28, 760387), (37, 575428), (74, 287714), (148, 143857), (259, 82204), (518, 41102), (1036, 20551)]