1220878705

素因数分解:

$5^1\times {\mathrm{61}}^2\times {\mathrm{211}}^1\times {\mathrm{311}}^1$

素因数の和:649

約数の個数: 24

約数和(自身を含む): 1501336512

約数和(自身を除く): 280457807

約数列:

[1, 5, 61, 211, 305, 311, 1055, 1555, 3721, 12871, 18605, 18971, 64355, 65621, 94855, 328105, 785131, 1157231, 3925655, 4002881, 5786155, 20014405, 244175741, 1220878705]

約数ペア:

[(1, 1220878705), (5, 244175741), (61, 20014405), (211, 5786155), (305, 4002881), (311, 3925655), (1055, 1157231), (1555, 785131), (3721, 328105), (12871, 94855), (18605, 65621), (18971, 64355)]