81339988

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{563}}^1\times {\mathrm{1901}}^1$

素因数の和:2487

約数の個数: 24

約数和(自身を含む): 150181920

約数和(自身を除く): 68841932

約数列:

[1, 2, 4, 19, 38, 76, 563, 1126, 1901, 2252, 3802, 7604, 10697, 21394, 36119, 42788, 72238, 144476, 1070263, 2140526, 4281052, 20334997, 40669994, 81339988]

約数ペア:

[(1, 81339988), (2, 40669994), (4, 20334997), (19, 4281052), (38, 2140526), (76, 1070263), (563, 144476), (1126, 72238), (1901, 42788), (2252, 36119), (3802, 21394), (7604, 10697)]