15535420

素因数分解:

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

素因数の和:4149

約数の個数: 24

約数和(自身を含む): 32798304

約数和(自身を除く): 17262884

約数列:

[1, 2, 4, 5, 10, 20, 197, 394, 788, 985, 1970, 3940, 3943, 7886, 15772, 19715, 39430, 78860, 776771, 1553542, 3107084, 3883855, 7767710, 15535420]

約数ペア:

[(1, 15535420), (2, 7767710), (4, 3883855), (5, 3107084), (10, 1553542), (20, 776771), (197, 78860), (394, 39430), (788, 19715), (985, 15772), (1970, 7886), (3940, 3943)]