20455856

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{67289}}^1$

素因数の和:67316

約数の個数: 20

約数和(自身を含む): 41719800

約数和(自身を除く): 21263944

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 67289, 134578, 269156, 538312, 1076624, 1278491, 2556982, 5113964, 10227928, 20455856]

約数ペア:

[(1, 20455856), (2, 10227928), (4, 5113964), (8, 2556982), (16, 1278491), (19, 1076624), (38, 538312), (76, 269156), (152, 134578), (304, 67289)]