80291960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{2063}}^1$

素因数の和:2220

約数の個数: 64

約数和(自身を含む): 208051200

約数和(自身を除く): 127759240

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 139, 140, 278, 280, 556, 695, 973, 1112, 1390, 1946, 2063, 2780, 3892, 4126, 4865, 5560, 7784, 8252, 9730, 10315, 14441, 16504, 19460, 20630, 28882, 38920, 41260, 57764, 72205, 82520, 115528, 144410, 286757, 288820, 573514, 577640, 1147028, 1433785, 2007299, 2294056, 2867570, 4014598, 5735140, 8029196, 10036495, 11470280, 16058392, 20072990, 40145980, 80291960]

約数ペア:

[(1, 80291960), (2, 40145980), (4, 20072990), (5, 16058392), (7, 11470280), (8, 10036495), (10, 8029196), (14, 5735140), (20, 4014598), (28, 2867570), (35, 2294056), (40, 2007299), (56, 1433785), (70, 1147028), (139, 577640), (140, 573514), (278, 288820), (280, 286757), (556, 144410), (695, 115528), (973, 82520), (1112, 72205), (1390, 57764), (1946, 41260), (2063, 38920), (2780, 28882), (3892, 20630), (4126, 19460), (4865, 16504), (5560, 14441), (7784, 10315), (8252, 9730)]