81501260

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{1543}}^1$

素因数の和:1710

約数の個数: 48

約数和(自身を含む): 181574400

約数和(自身を除く): 100073140

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 139, 190, 278, 380, 556, 695, 1390, 1543, 2641, 2780, 3086, 5282, 6172, 7715, 10564, 13205, 15430, 26410, 29317, 30860, 52820, 58634, 117268, 146585, 214477, 293170, 428954, 586340, 857908, 1072385, 2144770, 4075063, 4289540, 8150126, 16300252, 20375315, 40750630, 81501260]

約数ペア:

[(1, 81501260), (2, 40750630), (4, 20375315), (5, 16300252), (10, 8150126), (19, 4289540), (20, 4075063), (38, 2144770), (76, 1072385), (95, 857908), (139, 586340), (190, 428954), (278, 293170), (380, 214477), (556, 146585), (695, 117268), (1390, 58634), (1543, 52820), (2641, 30860), (2780, 29317), (3086, 26410), (5282, 15430), (6172, 13205), (7715, 10564)]