1281780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{7121}}^1$

素因数の和:7136

約数の個数: 36

約数和(自身を含む): 3888612

約数和(自身を除く): 2606832

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 7121, 14242, 21363, 28484, 35605, 42726, 64089, 71210, 85452, 106815, 128178, 142420, 213630, 256356, 320445, 427260, 640890, 1281780]

約数ペア:

[(1, 1281780), (2, 640890), (3, 427260), (4, 320445), (5, 256356), (6, 213630), (9, 142420), (10, 128178), (12, 106815), (15, 85452), (18, 71210), (20, 64089), (30, 42726), (36, 35605), (45, 28484), (60, 21363), (90, 14242), (180, 7121)]