400399996

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{1889}}^1\times {\mathrm{2789}}^1$

素因数の和:4701

約数の個数: 24

約数和(自身を含む): 738234000

約数和(自身を除く): 337834004

約数列:

[1, 2, 4, 19, 38, 76, 1889, 2789, 3778, 5578, 7556, 11156, 35891, 52991, 71782, 105982, 143564, 211964, 5268421, 10536842, 21073684, 100099999, 200199998, 400399996]

約数ペア:

[(1, 400399996), (2, 200199998), (4, 100099999), (19, 21073684), (38, 10536842), (76, 5268421), (1889, 211964), (2789, 143564), (3778, 105982), (5578, 71782), (7556, 52991), (11156, 35891)]