80544940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{4139}}^1$

素因数の和:4294

約数の個数: 48

約数和(自身を含む): 194745600

約数和(自身を除く): 114200660

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 139, 140, 278, 556, 695, 973, 1390, 1946, 2780, 3892, 4139, 4865, 8278, 9730, 16556, 19460, 20695, 28973, 41390, 57946, 82780, 115892, 144865, 289730, 575321, 579460, 1150642, 2301284, 2876605, 4027247, 5753210, 8054494, 11506420, 16108988, 20136235, 40272470, 80544940]

約数ペア:

[(1, 80544940), (2, 40272470), (4, 20136235), (5, 16108988), (7, 11506420), (10, 8054494), (14, 5753210), (20, 4027247), (28, 2876605), (35, 2301284), (70, 1150642), (139, 579460), (140, 575321), (278, 289730), (556, 144865), (695, 115892), (973, 82780), (1390, 57946), (1946, 41390), (2780, 28973), (3892, 20695), (4139, 19460), (4865, 16556), (8278, 9730)]