1243127560

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{285121}}^1$

素因数の和:285241

約数の個数: 32

約数和(自身を含む): 2822707800

約数和(自身を除く): 1579580240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 285121, 570242, 1140484, 1425605, 2280968, 2851210, 5702420, 11404840, 31078189, 62156378, 124312756, 155390945, 248625512, 310781890, 621563780, 1243127560]

約数ペア:

[(1, 1243127560), (2, 621563780), (4, 310781890), (5, 248625512), (8, 155390945), (10, 124312756), (20, 62156378), (40, 31078189), (109, 11404840), (218, 5702420), (436, 2851210), (545, 2280968), (872, 1425605), (1090, 1140484), (2180, 570242), (4360, 285121)]