12778280

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{5237}}^1$

素因数の和:5309

約数の個数: 32

約数和(自身を含む): 29228040

約数和(自身を除く): 16449760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 5237, 10474, 20948, 26185, 41896, 52370, 104740, 209480, 319457, 638914, 1277828, 1597285, 2555656, 3194570, 6389140, 12778280]

約数ペア:

[(1, 12778280), (2, 6389140), (4, 3194570), (5, 2555656), (8, 1597285), (10, 1277828), (20, 638914), (40, 319457), (61, 209480), (122, 104740), (244, 52370), (305, 41896), (488, 26185), (610, 20948), (1220, 10474), (2440, 5237)]