80981950

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{401}}^1\times {\mathrm{577}}^1$

素因数の和:997

約数の個数: 48

約数和(自身を含む): 172872864

約数和(自身を除く): 91890914

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 50, 70, 175, 350, 401, 577, 802, 1154, 2005, 2807, 2885, 4010, 4039, 5614, 5770, 8078, 10025, 14035, 14425, 20050, 20195, 28070, 28850, 40390, 70175, 100975, 140350, 201950, 231377, 462754, 1156885, 1619639, 2313770, 3239278, 5784425, 8098195, 11568850, 16196390, 40490975, 80981950]

約数ペア:

[(1, 80981950), (2, 40490975), (5, 16196390), (7, 11568850), (10, 8098195), (14, 5784425), (25, 3239278), (35, 2313770), (50, 1619639), (70, 1156885), (175, 462754), (350, 231377), (401, 201950), (577, 140350), (802, 100975), (1154, 70175), (2005, 40390), (2807, 28850), (2885, 28070), (4010, 20195), (4039, 20050), (5614, 14425), (5770, 14035), (8078, 10025)]