31070840

素因数分解:

$2^3\times 5^1\times {\mathrm{197}}^1\times {\mathrm{3943}}^1$

素因数の和:4151

約数の個数: 32

約数和(自身を含む): 70282080

約数和(自身を除く): 39211240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 197, 394, 788, 985, 1576, 1970, 3940, 3943, 7880, 7886, 15772, 19715, 31544, 39430, 78860, 157720, 776771, 1553542, 3107084, 3883855, 6214168, 7767710, 15535420, 31070840]

約数ペア:

[(1, 31070840), (2, 15535420), (4, 7767710), (5, 6214168), (8, 3883855), (10, 3107084), (20, 1553542), (40, 776771), (197, 157720), (394, 78860), (788, 39430), (985, 31544), (1576, 19715), (1970, 15772), (3940, 7886), (3943, 7880)]